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Finding the Fourth Proportional to 123,472.60, 185,208.90 and 118,288.60

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Solution

The fourth proportional to 123,472.60, 185,208.90 and 118,288.60 is: 177,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,472.60 : 185,208.90 = 118,288.60 : x
  2. Step 2: Convert to fraction form
    123,472.60/185,208.90 = 118,288.60/x
  3. Step 3: Cross multiply
    123,472.60x = 185,208.90 × 118,288.60
  4. Step 4: Simplify right side
    123,472.60x = 21,908,101,488.54
  5. Step 5: Solve for x
    x = 21,908,101,488.54/123,472.60
  6. Step 6: Final answer
    x = 177,432.90

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1.5x scale

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.