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Finding the Fourth Proportional to 125,165, 172,727.70 and 68,577.68

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Solution

The fourth proportional to 125,165, 172,727.70 and 68,577.68 is: 94,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,165 : 172,727.70 = 68,577.68 : x
  2. Step 2: Convert to fraction form
    125,165/172,727.70 = 68,577.68/x
  3. Step 3: Cross multiply
    125,165x = 172,727.70 × 68,577.68
  4. Step 4: Simplify right side
    125,165x = 11,845,264,937.74
  5. Step 5: Solve for x
    x = 11,845,264,937.74/125,165
  6. Step 6: Final answer
    x = 94,637.20

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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.