Home / 129,743.08-179,048.60-72,382

Finding the Fourth Proportional to 129,743.08, 179,048.60 and 72,382

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Solution

The fourth proportional to 129,743.08, 179,048.60 and 72,382 is: 99,888.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,743.08 : 179,048.60 = 72,382 : x
  2. Step 2: Convert to fraction form
    129,743.08/179,048.60 = 72,382/x
  3. Step 3: Cross multiply
    129,743.08x = 179,048.60 × 72,382
  4. Step 4: Simplify right side
    129,743.08x = 12,959,895,765.20
  5. Step 5: Solve for x
    x = 12,959,895,765.20/129,743.08
  6. Step 6: Final answer
    x = 99,888.92

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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.