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Finding the Fourth Proportional to 107,781.88, 148,739.02 and 62,486.12

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Solution

The fourth proportional to 107,781.88, 148,739.02 and 62,486.12 is: 86,230.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,781.88 : 148,739.02 = 62,486.12 : x
  2. Step 2: Convert to fraction form
    107,781.88/148,739.02 = 62,486.12/x
  3. Step 3: Cross multiply
    107,781.88x = 148,739.02 × 62,486.12
  4. Step 4: Simplify right side
    107,781.88x = 9,294,124,252.40
  5. Step 5: Solve for x
    x = 9,294,124,252.40/107,781.88
  6. Step 6: Final answer
    x = 86,230.86

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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.