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Finding the Fourth Proportional to 150,508.89, 207,711.60 and 83,440.89

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Solution

The fourth proportional to 150,508.89, 207,711.60 and 83,440.89 is: 115,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,508.89 : 207,711.60 = 83,440.89 : x
  2. Step 2: Convert to fraction form
    150,508.89/207,711.60 = 83,440.89/x
  3. Step 3: Cross multiply
    150,508.89x = 207,711.60 × 83,440.89
  4. Step 4: Simplify right side
    150,508.89x = 17,331,640,767.32
  5. Step 5: Solve for x
    x = 17,331,640,767.32/150,508.89
  6. Step 6: Final answer
    x = 115,153.60

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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.