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Finding the Fourth Proportional to 158,419.66, 218,610.76 and 90,433.93

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Solution

The fourth proportional to 158,419.66, 218,610.76 and 90,433.93 is: 124,794.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,419.66 : 218,610.76 = 90,433.93 : x
  2. Step 2: Convert to fraction form
    158,419.66/218,610.76 = 90,433.93/x
  3. Step 3: Cross multiply
    158,419.66x = 218,610.76 × 90,433.93
  4. Step 4: Simplify right side
    158,419.66x = 19,769,830,167.09
  5. Step 5: Solve for x
    x = 19,769,830,167.09/158,419.66
  6. Step 6: Final answer
    x = 124,794.04

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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.