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Finding the Fourth Proportional to 91,852.60, 137,487.30 and 84,854.20

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Solution

The fourth proportional to 91,852.60, 137,487.30 and 84,854.20 is: 127,011.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,852.60 : 137,487.30 = 84,854.20 : x
  2. Step 2: Convert to fraction form
    91,852.60/137,487.30 = 84,854.20/x
  3. Step 3: Cross multiply
    91,852.60x = 137,487.30 × 84,854.20
  4. Step 4: Simplify right side
    91,852.60x = 11,666,374,851.66
  5. Step 5: Solve for x
    x = 11,666,374,851.66/91,852.60
  6. Step 6: Final answer
    x = 127,011.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.