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Finding the Fourth Proportional to 118,001.70, 176,710.95 and 78,344.10

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Solution

The fourth proportional to 118,001.70, 176,710.95 and 78,344.10 is: 117,322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,001.70 : 176,710.95 = 78,344.10 : x
  2. Step 2: Convert to fraction form
    118,001.70/176,710.95 = 78,344.10/x
  3. Step 3: Cross multiply
    118,001.70x = 176,710.95 × 78,344.10
  4. Step 4: Simplify right side
    118,001.70x = 13,844,260,337.90
  5. Step 5: Solve for x
    x = 13,844,260,337.90/118,001.70
  6. Step 6: Final answer
    x = 117,322.55

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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.