Home / 131,726.80-181,818.12-81,397.36

Finding the Fourth Proportional to 131,726.80, 181,818.12 and 81,397.36

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Solution

The fourth proportional to 131,726.80, 181,818.12 and 81,397.36 is: 112,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,726.80 : 181,818.12 = 81,397.36 : x
  2. Step 2: Convert to fraction form
    131,726.80/181,818.12 = 81,397.36/x
  3. Step 3: Cross multiply
    131,726.80x = 181,818.12 × 81,397.36
  4. Step 4: Simplify right side
    131,726.80x = 14,799,514,968.16
  5. Step 5: Solve for x
    x = 14,799,514,968.16/131,726.80
  6. Step 6: Final answer
    x = 112,350.07

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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.