Home / 91,207.40-136,811.10-84,986.60

Finding the Fourth Proportional to 91,207.40, 136,811.10 and 84,986.60

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Solution

The fourth proportional to 91,207.40, 136,811.10 and 84,986.60 is: 127,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,207.40 : 136,811.10 = 84,986.60 : x
  2. Step 2: Convert to fraction form
    91,207.40/136,811.10 = 84,986.60/x
  3. Step 3: Cross multiply
    91,207.40x = 136,811.10 × 84,986.60
  4. Step 4: Simplify right side
    91,207.40x = 11,627,110,231.26
  5. Step 5: Solve for x
    x = 11,627,110,231.26/91,207.40
  6. Step 6: Final answer
    x = 127,479.90

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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.