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Finding the Fourth Proportional to 118,487.20, 177,500.40 and 65,802.40

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Solution

The fourth proportional to 118,487.20, 177,500.40 and 65,802.40 is: 98,575.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,487.20 : 177,500.40 = 65,802.40 : x
  2. Step 2: Convert to fraction form
    118,487.20/177,500.40 = 65,802.40/x
  3. Step 3: Cross multiply
    118,487.20x = 177,500.40 × 65,802.40
  4. Step 4: Simplify right side
    118,487.20x = 11,679,952,320.96
  5. Step 5: Solve for x
    x = 11,679,952,320.96/118,487.20
  6. Step 6: Final answer
    x = 98,575.65

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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.