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Finding the Fourth Proportional to 131,806.80, 181,894.20 and 73,663.56

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Solution

The fourth proportional to 131,806.80, 181,894.20 and 73,663.56 is: 101,656.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,806.80 : 181,894.20 = 73,663.56 : x
  2. Step 2: Convert to fraction form
    131,806.80/181,894.20 = 73,663.56/x
  3. Step 3: Cross multiply
    131,806.80x = 181,894.20 × 73,663.56
  4. Step 4: Simplify right side
    131,806.80x = 13,398,974,315.35
  5. Step 5: Solve for x
    x = 13,398,974,315.35/131,806.80
  6. Step 6: Final answer
    x = 101,656.17

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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.