Home / 129,417.06-178,595.17-72,828.43

Finding the Fourth Proportional to 129,417.06, 178,595.17 and 72,828.43

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Solution

The fourth proportional to 129,417.06, 178,595.17 and 72,828.43 is: 100,503.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,417.06 : 178,595.17 = 72,828.43 : x
  2. Step 2: Convert to fraction form
    129,417.06/178,595.17 = 72,828.43/x
  3. Step 3: Cross multiply
    129,417.06x = 178,595.17 × 72,828.43
  4. Step 4: Simplify right side
    129,417.06x = 13,006,806,287.52
  5. Step 5: Solve for x
    x = 13,006,806,287.52/129,417.06
  6. Step 6: Final answer
    x = 100,503.03

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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.