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Finding the Fourth Proportional to 124,081.72, 171,218.86 and 73,091.13

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Solution

The fourth proportional to 124,081.72, 171,218.86 and 73,091.13 is: 100,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,081.72 : 171,218.86 = 73,091.13 : x
  2. Step 2: Convert to fraction form
    124,081.72/171,218.86 = 73,091.13/x
  3. Step 3: Cross multiply
    124,081.72x = 171,218.86 × 73,091.13
  4. Step 4: Simplify right side
    124,081.72x = 12,514,580,985.71
  5. Step 5: Solve for x
    x = 12,514,580,985.71/124,081.72
  6. Step 6: Final answer
    x = 100,857.57

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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.