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Finding the Fourth Proportional to 151,807.92, 209,509.86 and 88,141.92

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Solution

The fourth proportional to 151,807.92, 209,509.86 and 88,141.92 is: 121,644.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,807.92 : 209,509.86 = 88,141.92 : x
  2. Step 2: Convert to fraction form
    151,807.92/209,509.86 = 88,141.92/x
  3. Step 3: Cross multiply
    151,807.92x = 209,509.86 × 88,141.92
  4. Step 4: Simplify right side
    151,807.92x = 18,466,601,319.33
  5. Step 5: Solve for x
    x = 18,466,601,319.33/151,807.92
  6. Step 6: Final answer
    x = 121,644.52

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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.