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Finding the Fourth Proportional to 158,125.89, 218,223.41 and 91,079.49

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Solution

The fourth proportional to 158,125.89, 218,223.41 and 91,079.49 is: 125,695.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,125.89 : 218,223.41 = 91,079.49 : x
  2. Step 2: Convert to fraction form
    158,125.89/218,223.41 = 91,079.49/x
  3. Step 3: Cross multiply
    158,125.89x = 218,223.41 × 91,079.49
  4. Step 4: Simplify right side
    158,125.89x = 19,875,676,433.46
  5. Step 5: Solve for x
    x = 19,875,676,433.46/158,125.89
  6. Step 6: Final answer
    x = 125,695.27

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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.