Home / 123,479.16-170,401.32-66,890.76

Finding the Fourth Proportional to 123,479.16, 170,401.32 and 66,890.76

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Solution

The fourth proportional to 123,479.16, 170,401.32 and 66,890.76 is: 92,309.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,479.16 : 170,401.32 = 66,890.76 : x
  2. Step 2: Convert to fraction form
    123,479.16/170,401.32 = 66,890.76/x
  3. Step 3: Cross multiply
    123,479.16x = 170,401.32 × 66,890.76
  4. Step 4: Simplify right side
    123,479.16x = 11,398,273,799.80
  5. Step 5: Solve for x
    x = 11,398,273,799.80/123,479.16
  6. Step 6: Final answer
    x = 92,309.29

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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.