Home / 101,575.18-140,127.22-65,776.71

Finding the Fourth Proportional to 101,575.18, 140,127.22 and 65,776.71

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Solution

The fourth proportional to 101,575.18, 140,127.22 and 65,776.71 is: 90,741.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,575.18 : 140,127.22 = 65,776.71 : x
  2. Step 2: Convert to fraction form
    101,575.18/140,127.22 = 65,776.71/x
  3. Step 3: Cross multiply
    101,575.18x = 140,127.22 × 65,776.71
  4. Step 4: Simplify right side
    101,575.18x = 9,217,107,513.05
  5. Step 5: Solve for x
    x = 9,217,107,513.05/101,575.18
  6. Step 6: Final answer
    x = 90,741.73

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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.