Home / 129,246.72-178,240.14-83,876.19

Finding the Fourth Proportional to 129,246.72, 178,240.14 and 83,876.19

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Solution

The fourth proportional to 129,246.72, 178,240.14 and 83,876.19 is: 115,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,246.72 : 178,240.14 = 83,876.19 : x
  2. Step 2: Convert to fraction form
    129,246.72/178,240.14 = 83,876.19/x
  3. Step 3: Cross multiply
    129,246.72x = 178,240.14 × 83,876.19
  4. Step 4: Simplify right side
    129,246.72x = 14,950,103,848.27
  5. Step 5: Solve for x
    x = 14,950,103,848.27/129,246.72
  6. Step 6: Final answer
    x = 115,671.05

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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.