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Finding the Fourth Proportional to 150,348.96, 207,478.80 and 86,689.44

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Solution

The fourth proportional to 150,348.96, 207,478.80 and 86,689.44 is: 119,629.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,348.96 : 207,478.80 = 86,689.44 : x
  2. Step 2: Convert to fraction form
    150,348.96/207,478.80 = 86,689.44/x
  3. Step 3: Cross multiply
    150,348.96x = 207,478.80 × 86,689.44
  4. Step 4: Simplify right side
    150,348.96x = 17,986,220,983.87
  5. Step 5: Solve for x
    x = 17,986,220,983.87/150,348.96
  6. Step 6: Final answer
    x = 119,629.83

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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.