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Finding the Fourth Proportional to 136,151.70, 187,894.53 and 75,726.71

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Solution

The fourth proportional to 136,151.70, 187,894.53 and 75,726.71 is: 104,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,151.70 : 187,894.53 = 75,726.71 : x
  2. Step 2: Convert to fraction form
    136,151.70/187,894.53 = 75,726.71/x
  3. Step 3: Cross multiply
    136,151.70x = 187,894.53 × 75,726.71
  4. Step 4: Simplify right side
    136,151.70x = 14,228,635,053.63
  5. Step 5: Solve for x
    x = 14,228,635,053.63/136,151.70
  6. Step 6: Final answer
    x = 104,505.75

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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.