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Finding the Fourth Proportional to 150,458.61, 207,639.25 and 85,938.47

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Solution

The fourth proportional to 150,458.61, 207,639.25 and 85,938.47 is: 118,598.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,458.61 : 207,639.25 = 85,938.47 : x
  2. Step 2: Convert to fraction form
    150,458.61/207,639.25 = 85,938.47/x
  3. Step 3: Cross multiply
    150,458.61x = 207,639.25 × 85,938.47
  4. Step 4: Simplify right side
    150,458.61x = 17,844,198,982.55
  5. Step 5: Solve for x
    x = 17,844,198,982.55/150,458.61
  6. Step 6: Final answer
    x = 118,598.72

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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.