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Finding the Fourth Proportional to 125,317, 172,937.55 and 68,728.60

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Solution

The fourth proportional to 125,317, 172,937.55 and 68,728.60 is: 94,845.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,317 : 172,937.55 = 68,728.60 : x
  2. Step 2: Convert to fraction form
    125,317/172,937.55 = 68,728.60/x
  3. Step 3: Cross multiply
    125,317x = 172,937.55 × 68,728.60
  4. Step 4: Simplify right side
    125,317x = 11,885,755,698.93
  5. Step 5: Solve for x
    x = 11,885,755,698.93/125,317
  6. Step 6: Final answer
    x = 94,845.52

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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.