Home / 129,595.31-178,819.84-72,222.06

Finding the Fourth Proportional to 129,595.31, 178,819.84 and 72,222.06

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Solution

The fourth proportional to 129,595.31, 178,819.84 and 72,222.06 is: 99,654.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,595.31 : 178,819.84 = 72,222.06 : x
  2. Step 2: Convert to fraction form
    129,595.31/178,819.84 = 72,222.06/x
  3. Step 3: Cross multiply
    129,595.31x = 178,819.84 × 72,222.06
  4. Step 4: Simplify right side
    129,595.31x = 12,914,737,033.12
  5. Step 5: Solve for x
    x = 12,914,737,033.12/129,595.31
  6. Step 6: Final answer
    x = 99,654.36

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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.