Home / 91,835.60-137,461.80-84,837.20

Finding the Fourth Proportional to 91,835.60, 137,461.80 and 84,837.20

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Solution

The fourth proportional to 91,835.60, 137,461.80 and 84,837.20 is: 126,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,835.60 : 137,461.80 = 84,837.20 : x
  2. Step 2: Convert to fraction form
    91,835.60/137,461.80 = 84,837.20/x
  3. Step 3: Cross multiply
    91,835.60x = 137,461.80 × 84,837.20
  4. Step 4: Simplify right side
    91,835.60x = 11,661,874,218.96
  5. Step 5: Solve for x
    x = 11,661,874,218.96/91,835.60
  6. Step 6: Final answer
    x = 126,986.42

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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.