Home / 107,031.28-147,774.60-66,761.20

Finding the Fourth Proportional to 107,031.28, 147,774.60 and 66,761.20

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Solution

The fourth proportional to 107,031.28, 147,774.60 and 66,761.20 is: 92,175.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,031.28 : 147,774.60 = 66,761.20 : x
  2. Step 2: Convert to fraction form
    107,031.28/147,774.60 = 66,761.20/x
  3. Step 3: Cross multiply
    107,031.28x = 147,774.60 × 66,761.20
  4. Step 4: Simplify right side
    107,031.28x = 9,865,609,625.52
  5. Step 5: Solve for x
    x = 9,865,609,625.52/107,031.28
  6. Step 6: Final answer
    x = 92,175.01

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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.