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Finding the Fourth Proportional to 173,863.76, 239,915.40 and 138,140.24

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Solution

The fourth proportional to 173,863.76, 239,915.40 and 138,140.24 is: 190,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,863.76 : 239,915.40 = 138,140.24 : x
  2. Step 2: Convert to fraction form
    173,863.76/239,915.40 = 138,140.24/x
  3. Step 3: Cross multiply
    173,863.76x = 239,915.40 × 138,140.24
  4. Step 4: Simplify right side
    173,863.76x = 33,141,970,935.70
  5. Step 5: Solve for x
    x = 33,141,970,935.70/173,863.76
  6. Step 6: Final answer
    x = 190,620.35

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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.