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Finding the Fourth Proportional to 122,309.57, 168,787.50 and 71,357.33

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Solution

The fourth proportional to 122,309.57, 168,787.50 and 71,357.33 is: 98,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,309.57 : 168,787.50 = 71,357.33 : x
  2. Step 2: Convert to fraction form
    122,309.57/168,787.50 = 71,357.33/x
  3. Step 3: Cross multiply
    122,309.57x = 168,787.50 × 71,357.33
  4. Step 4: Simplify right side
    122,309.57x = 12,044,225,337.38
  5. Step 5: Solve for x
    x = 12,044,225,337.38/122,309.57
  6. Step 6: Final answer
    x = 98,473.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.