Home / 129,193.79-178,281.88-71,833.03

Finding the Fourth Proportional to 129,193.79, 178,281.88 and 71,833.03

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Solution

The fourth proportional to 129,193.79, 178,281.88 and 71,833.03 is: 99,126.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,193.79 : 178,281.88 = 71,833.03 : x
  2. Step 2: Convert to fraction form
    129,193.79/178,281.88 = 71,833.03/x
  3. Step 3: Cross multiply
    129,193.79x = 178,281.88 × 71,833.03
  4. Step 4: Simplify right side
    129,193.79x = 12,806,527,009.21
  5. Step 5: Solve for x
    x = 12,806,527,009.21/129,193.79
  6. Step 6: Final answer
    x = 99,126.49

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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.