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Finding the Fourth Proportional to 150,390.34, 207,524.86 and 86,715.84

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Solution

The fourth proportional to 150,390.34, 207,524.86 and 86,715.84 is: 119,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,390.34 : 207,524.86 = 86,715.84 : x
  2. Step 2: Convert to fraction form
    150,390.34/207,524.86 = 86,715.84/x
  3. Step 3: Cross multiply
    150,390.34x = 207,524.86 × 86,715.84
  4. Step 4: Simplify right side
    150,390.34x = 17,995,692,555.78
  5. Step 5: Solve for x
    x = 17,995,692,555.78/150,390.34
  6. Step 6: Final answer
    x = 119,659.90

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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.