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Finding the Fourth Proportional to 137,342.52, 205,644.66 and 87,150.87

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Solution

The fourth proportional to 137,342.52, 205,644.66 and 87,150.87 is: 130,492.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,342.52 : 205,644.66 = 87,150.87 : x
  2. Step 2: Convert to fraction form
    137,342.52/205,644.66 = 87,150.87/x
  3. Step 3: Cross multiply
    137,342.52x = 205,644.66 × 87,150.87
  4. Step 4: Simplify right side
    137,342.52x = 17,922,110,703.04
  5. Step 5: Solve for x
    x = 17,922,110,703.04/137,342.52
  6. Step 6: Final answer
    x = 130,492.08

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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.