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Finding the Fourth Proportional to 155,661.60, 233,565.30 and 80,866.20

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Solution

The fourth proportional to 155,661.60, 233,565.30 and 80,866.20 is: 121,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,661.60 : 233,565.30 = 80,866.20 : x
  2. Step 2: Convert to fraction form
    155,661.60/233,565.30 = 80,866.20/x
  3. Step 3: Cross multiply
    155,661.60x = 233,565.30 × 80,866.20
  4. Step 4: Simplify right side
    155,661.60x = 18,887,538,262.86
  5. Step 5: Solve for x
    x = 18,887,538,262.86/155,661.60
  6. Step 6: Final answer
    x = 121,337.17

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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.