Home / 129,862.30-179,211.27-76,179.10

Finding the Fourth Proportional to 129,862.30, 179,211.27 and 76,179.10

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Solution

The fourth proportional to 129,862.30, 179,211.27 and 76,179.10 is: 105,127.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,862.30 : 179,211.27 = 76,179.10 : x
  2. Step 2: Convert to fraction form
    129,862.30/179,211.27 = 76,179.10/x
  3. Step 3: Cross multiply
    129,862.30x = 179,211.27 × 76,179.10
  4. Step 4: Simplify right side
    129,862.30x = 13,652,153,258.46
  5. Step 5: Solve for x
    x = 13,652,153,258.46/129,862.30
  6. Step 6: Final answer
    x = 105,127.92

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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.