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Finding the Fourth Proportional to 134,151.70, 201,357.15 and 81,663.70

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Solution

The fourth proportional to 134,151.70, 201,357.15 and 81,663.70 is: 122,574.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,151.70 : 201,357.15 = 81,663.70 : x
  2. Step 2: Convert to fraction form
    134,151.70/201,357.15 = 81,663.70/x
  3. Step 3: Cross multiply
    134,151.70x = 201,357.15 × 81,663.70
  4. Step 4: Simplify right side
    134,151.70x = 16,443,569,890.46
  5. Step 5: Solve for x
    x = 16,443,569,890.46/134,151.70
  6. Step 6: Final answer
    x = 122,574.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.