Home / 142,655,738,851.53-196,865,046,255.84-78,427,555,921.53

Finding the Fourth Proportional to 142,655,738,851.53, 196,865,046,255.84 and 78,427,555,921.53

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Solution

The fourth proportional to 142,655,738,851.53, 196,865,046,255.84 and 78,427,555,921.53 is: 108,230,096,794.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,655,738,851.53 : 196,865,046,255.84 = 78,427,555,921.53 : x
  2. Step 2: Convert to fraction form
    142,655,738,851.53/196,865,046,255.84 = 78,427,555,921.53/x
  3. Step 3: Cross multiply
    142,655,738,851.53x = 196,865,046,255.84 × 78,427,555,921.53
  4. Step 4: Simplify right side
    142,655,738,851.53x = 15,439,644,424,224,481,738,752
  5. Step 5: Solve for x
    x = 15,439,644,424,224,481,738,752/142,655,738,851.53
  6. Step 6: Final answer
    x = 108,230,096,794.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.