Home / 124,878.27-172,279.76-81,868.08

Finding the Fourth Proportional to 124,878.27, 172,279.76 and 81,868.08

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Solution

The fourth proportional to 124,878.27, 172,279.76 and 81,868.08 is: 112,943.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,878.27 : 172,279.76 = 81,868.08 : x
  2. Step 2: Convert to fraction form
    124,878.27/172,279.76 = 81,868.08/x
  3. Step 3: Cross multiply
    124,878.27x = 172,279.76 × 81,868.08
  4. Step 4: Simplify right side
    124,878.27x = 14,104,212,764.72
  5. Step 5: Solve for x
    x = 14,104,212,764.72/124,878.27
  6. Step 6: Final answer
    x = 112,943.69

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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.