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Finding the Fourth Proportional to 125,349.19, 172,981.91 and 68,760.56

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Solution

The fourth proportional to 125,349.19, 172,981.91 and 68,760.56 is: 94,889.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,349.19 : 172,981.91 = 68,760.56 : x
  2. Step 2: Convert to fraction form
    125,349.19/172,981.91 = 68,760.56/x
  3. Step 3: Cross multiply
    125,349.19x = 172,981.91 × 68,760.56
  4. Step 4: Simplify right side
    125,349.19x = 11,894,333,605.83
  5. Step 5: Solve for x
    x = 11,894,333,605.83/125,349.19
  6. Step 6: Final answer
    x = 94,889.59

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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.