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Finding the Fourth Proportional to 125,131.90, 172,681.13 and 67,769.92

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Solution

The fourth proportional to 125,131.90, 172,681.13 and 67,769.92 is: 93,522.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,131.90 : 172,681.13 = 67,769.92 : x
  2. Step 2: Convert to fraction form
    125,131.90/172,681.13 = 67,769.92/x
  3. Step 3: Cross multiply
    125,131.90x = 172,681.13 × 67,769.92
  4. Step 4: Simplify right side
    125,131.90x = 11,702,586,365.61
  5. Step 5: Solve for x
    x = 11,702,586,365.61/125,131.90
  6. Step 6: Final answer
    x = 93,522.01

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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.