Home / 123,278.22-170,124.12-66,689.46

Finding the Fourth Proportional to 123,278.22, 170,124.12 and 66,689.46

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Solution

The fourth proportional to 123,278.22, 170,124.12 and 66,689.46 is: 92,031.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,278.22 : 170,124.12 = 66,689.46 : x
  2. Step 2: Convert to fraction form
    123,278.22/170,124.12 = 66,689.46/x
  3. Step 3: Cross multiply
    123,278.22x = 170,124.12 × 66,689.46
  4. Step 4: Simplify right side
    123,278.22x = 11,345,485,695.78
  5. Step 5: Solve for x
    x = 11,345,485,695.78/123,278.22
  6. Step 6: Final answer
    x = 92,031.55

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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.