Home / 138,340.54-190,915.05-77,092.24

Finding the Fourth Proportional to 138,340.54, 190,915.05 and 77,092.24

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Solution

The fourth proportional to 138,340.54, 190,915.05 and 77,092.24 is: 106,390.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,340.54 : 190,915.05 = 77,092.24 : x
  2. Step 2: Convert to fraction form
    138,340.54/190,915.05 = 77,092.24/x
  3. Step 3: Cross multiply
    138,340.54x = 190,915.05 × 77,092.24
  4. Step 4: Simplify right side
    138,340.54x = 14,718,068,854.21
  5. Step 5: Solve for x
    x = 14,718,068,854.21/138,340.54
  6. Step 6: Final answer
    x = 106,390.14

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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.