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Finding the Fourth Proportional to 161,451.60, 242,062.20 and 72,632.40

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Solution

The fourth proportional to 161,451.60, 242,062.20 and 72,632.40 is: 108,896.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,451.60 : 242,062.20 = 72,632.40 : x
  2. Step 2: Convert to fraction form
    161,451.60/242,062.20 = 72,632.40/x
  3. Step 3: Cross multiply
    161,451.60x = 242,062.20 × 72,632.40
  4. Step 4: Simplify right side
    161,451.60x = 17,581,558,535.28
  5. Step 5: Solve for x
    x = 17,581,558,535.28/161,451.60
  6. Step 6: Final answer
    x = 108,896.77

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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.