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Finding the Fourth Proportional to 125,319.84, 172,929.51 and 71,604.42

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Solution

The fourth proportional to 125,319.84, 172,929.51 and 71,604.42 is: 98,807.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,319.84 : 172,929.51 = 71,604.42 : x
  2. Step 2: Convert to fraction form
    125,319.84/172,929.51 = 71,604.42/x
  3. Step 3: Cross multiply
    125,319.84x = 172,929.51 × 71,604.42
  4. Step 4: Simplify right side
    125,319.84x = 12,382,517,264.43
  5. Step 5: Solve for x
    x = 12,382,517,264.43/125,319.84
  6. Step 6: Final answer
    x = 98,807.32

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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.