Home / 129,215.36-193,625.19-86,938.83

Finding the Fourth Proportional to 129,215.36, 193,625.19 and 86,938.83

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Solution

The fourth proportional to 129,215.36, 193,625.19 and 86,938.83 is: 130,275.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,215.36 : 193,625.19 = 86,938.83 : x
  2. Step 2: Convert to fraction form
    129,215.36/193,625.19 = 86,938.83/x
  3. Step 3: Cross multiply
    129,215.36x = 193,625.19 × 86,938.83
  4. Step 4: Simplify right side
    129,215.36x = 16,833,547,477.13
  5. Step 5: Solve for x
    x = 16,833,547,477.13/129,215.36
  6. Step 6: Final answer
    x = 130,275.13

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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.