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Finding the Fourth Proportional to 125,012.93, 172,474.94 and 71,259.17

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Solution

The fourth proportional to 125,012.93, 172,474.94 and 71,259.17 is: 98,313.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,012.93 : 172,474.94 = 71,259.17 : x
  2. Step 2: Convert to fraction form
    125,012.93/172,474.94 = 71,259.17/x
  3. Step 3: Cross multiply
    125,012.93x = 172,474.94 × 71,259.17
  4. Step 4: Simplify right side
    125,012.93x = 12,290,420,385.97
  5. Step 5: Solve for x
    x = 12,290,420,385.97/125,012.93
  6. Step 6: Final answer
    x = 98,313.20

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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.