Home / 150,187.32-207,281.70-85,656.78

Finding the Fourth Proportional to 150,187.32, 207,281.70 and 85,656.78

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Solution

The fourth proportional to 150,187.32, 207,281.70 and 85,656.78 is: 118,219.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,187.32 : 207,281.70 = 85,656.78 : x
  2. Step 2: Convert to fraction form
    150,187.32/207,281.70 = 85,656.78/x
  3. Step 3: Cross multiply
    150,187.32x = 207,281.70 × 85,656.78
  4. Step 4: Simplify right side
    150,187.32x = 17,755,082,974.93
  5. Step 5: Solve for x
    x = 17,755,082,974.93/150,187.32
  6. Step 6: Final answer
    x = 118,219.59

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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.