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Finding the Fourth Proportional to 107,990.88, 148,946.96 and 79,301.52

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Solution

The fourth proportional to 107,990.88, 148,946.96 and 79,301.52 is: 109,377.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,990.88 : 148,946.96 = 79,301.52 : x
  2. Step 2: Convert to fraction form
    107,990.88/148,946.96 = 79,301.52/x
  3. Step 3: Cross multiply
    107,990.88x = 148,946.96 × 79,301.52
  4. Step 4: Simplify right side
    107,990.88x = 11,811,720,327.38
  5. Step 5: Solve for x
    x = 11,811,720,327.38/107,990.88
  6. Step 6: Final answer
    x = 109,377.02

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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.