Home / 142,655,738,845.90-196,865,046,248.07-78,427,555,915.91

Finding the Fourth Proportional to 142,655,738,845.90, 196,865,046,248.07 and 78,427,555,915.91

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Solution

The fourth proportional to 142,655,738,845.90, 196,865,046,248.07 and 78,427,555,915.91 is: 108,230,096,786.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,655,738,845.90 : 196,865,046,248.07 = 78,427,555,915.91 : x
  2. Step 2: Convert to fraction form
    142,655,738,845.90/196,865,046,248.07 = 78,427,555,915.91/x
  3. Step 3: Cross multiply
    142,655,738,845.90x = 196,865,046,248.07 × 78,427,555,915.91
  4. Step 4: Simplify right side
    142,655,738,845.90x = 15,439,644,422,507,734,237,184
  5. Step 5: Solve for x
    x = 15,439,644,422,507,734,237,184/142,655,738,845.90
  6. Step 6: Final answer
    x = 108,230,096,786.97

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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.