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Finding the Fourth Proportional to 136,437.52, 204,683.96 and 42,921.52

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Solution

The fourth proportional to 136,437.52, 204,683.96 and 42,921.52 is: 64,390.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,437.52 : 204,683.96 = 42,921.52 : x
  2. Step 2: Convert to fraction form
    136,437.52/204,683.96 = 42,921.52/x
  3. Step 3: Cross multiply
    136,437.52x = 204,683.96 × 42,921.52
  4. Step 4: Simplify right side
    136,437.52x = 8,785,346,682.82
  5. Step 5: Solve for x
    x = 8,785,346,682.82/136,437.52
  6. Step 6: Final answer
    x = 64,390.99

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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.