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Finding the Fourth Proportional to 118,612.72, 177,932.40 and 39,732.40

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Solution

The fourth proportional to 118,612.72, 177,932.40 and 39,732.40 is: 59,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,612.72 : 177,932.40 = 39,732.40 : x
  2. Step 2: Convert to fraction form
    118,612.72/177,932.40 = 39,732.40/x
  3. Step 3: Cross multiply
    118,612.72x = 177,932.40 × 39,732.40
  4. Step 4: Simplify right side
    118,612.72x = 7,069,681,289.76
  5. Step 5: Solve for x
    x = 7,069,681,289.76/118,612.72
  6. Step 6: Final answer
    x = 59,603.06

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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.