Home / 91,203.40-136,805.10-66,125.80

Finding the Fourth Proportional to 91,203.40, 136,805.10 and 66,125.80

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Solution

The fourth proportional to 91,203.40, 136,805.10 and 66,125.80 is: 99,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,203.40 : 136,805.10 = 66,125.80 : x
  2. Step 2: Convert to fraction form
    91,203.40/136,805.10 = 66,125.80/x
  3. Step 3: Cross multiply
    91,203.40x = 136,805.10 × 66,125.80
  4. Step 4: Simplify right side
    91,203.40x = 9,046,346,681.58
  5. Step 5: Solve for x
    x = 9,046,346,681.58/91,203.40
  6. Step 6: Final answer
    x = 99,188.70

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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.