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Finding the Fourth Proportional to 118,224.20, 176,904.30 and 87,120.20

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Solution

The fourth proportional to 118,224.20, 176,904.30 and 87,120.20 is: 130,361.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,224.20 : 176,904.30 = 87,120.20 : x
  2. Step 2: Convert to fraction form
    118,224.20/176,904.30 = 87,120.20/x
  3. Step 3: Cross multiply
    118,224.20x = 176,904.30 × 87,120.20
  4. Step 4: Simplify right side
    118,224.20x = 15,411,937,996.86
  5. Step 5: Solve for x
    x = 15,411,937,996.86/118,224.20
  6. Step 6: Final answer
    x = 130,361.96

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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.