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Finding the Fourth Proportional to 118,077.60, 176,727.60 and 91,639.20

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Solution

The fourth proportional to 118,077.60, 176,727.60 and 91,639.20 is: 137,157.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,077.60 : 176,727.60 = 91,639.20 : x
  2. Step 2: Convert to fraction form
    118,077.60/176,727.60 = 91,639.20/x
  3. Step 3: Cross multiply
    118,077.60x = 176,727.60 × 91,639.20
  4. Step 4: Simplify right side
    118,077.60x = 16,195,175,881.92
  5. Step 5: Solve for x
    x = 16,195,175,881.92/118,077.60
  6. Step 6: Final answer
    x = 137,157.06

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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.