Home / 130,650.14-180,275.54-76,915.55

Finding the Fourth Proportional to 130,650.14, 180,275.54 and 76,915.55

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Solution

The fourth proportional to 130,650.14, 180,275.54 and 76,915.55 is: 106,130.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,650.14 : 180,275.54 = 76,915.55 : x
  2. Step 2: Convert to fraction form
    130,650.14/180,275.54 = 76,915.55/x
  3. Step 3: Cross multiply
    130,650.14x = 180,275.54 × 76,915.55
  4. Step 4: Simplify right side
    130,650.14x = 13,865,991,024.69
  5. Step 5: Solve for x
    x = 13,865,991,024.69/130,650.14
  6. Step 6: Final answer
    x = 106,130.71

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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.