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Finding the Fourth Proportional to 136,491.60, 204,737.40 and 69,909.60

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Solution

The fourth proportional to 136,491.60, 204,737.40 and 69,909.60 is: 104,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,491.60 : 204,737.40 = 69,909.60 : x
  2. Step 2: Convert to fraction form
    136,491.60/204,737.40 = 69,909.60/x
  3. Step 3: Cross multiply
    136,491.60x = 204,737.40 × 69,909.60
  4. Step 4: Simplify right side
    136,491.60x = 14,313,109,739.04
  5. Step 5: Solve for x
    x = 14,313,109,739.04/136,491.60
  6. Step 6: Final answer
    x = 104,864.40

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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.