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Finding the Fourth Proportional to 133,046.90, 199,570.35 and 85,807.70

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Solution

The fourth proportional to 133,046.90, 199,570.35 and 85,807.70 is: 128,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,046.90 : 199,570.35 = 85,807.70 : x
  2. Step 2: Convert to fraction form
    133,046.90/199,570.35 = 85,807.70/x
  3. Step 3: Cross multiply
    133,046.90x = 199,570.35 × 85,807.70
  4. Step 4: Simplify right side
    133,046.90x = 17,124,672,721.70
  5. Step 5: Solve for x
    x = 17,124,672,721.70/133,046.90
  6. Step 6: Final answer
    x = 128,711.55

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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.