Home / 129,034.01-193,456.65-86,809.12

Finding the Fourth Proportional to 129,034.01, 193,456.65 and 86,809.12

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Solution

The fourth proportional to 129,034.01, 193,456.65 and 86,809.12 is: 130,150.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,034.01 : 193,456.65 = 86,809.12 : x
  2. Step 2: Convert to fraction form
    129,034.01/193,456.65 = 86,809.12/x
  3. Step 3: Cross multiply
    129,034.01x = 193,456.65 × 86,809.12
  4. Step 4: Simplify right side
    129,034.01x = 16,793,801,386.54
  5. Step 5: Solve for x
    x = 16,793,801,386.54/129,034.01
  6. Step 6: Final answer
    x = 130,150.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.