Home / 122,397.82-169,016.70-76,536.06

Finding the Fourth Proportional to 122,397.82, 169,016.70 and 76,536.06

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Solution

The fourth proportional to 122,397.82, 169,016.70 and 76,536.06 is: 105,687.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,397.82 : 169,016.70 = 76,536.06 : x
  2. Step 2: Convert to fraction form
    122,397.82/169,016.70 = 76,536.06/x
  3. Step 3: Cross multiply
    122,397.82x = 169,016.70 × 76,536.06
  4. Step 4: Simplify right side
    122,397.82x = 12,935,872,292.20
  5. Step 5: Solve for x
    x = 12,935,872,292.20/122,397.82
  6. Step 6: Final answer
    x = 105,687.11

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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.