Home / 91,904.90-137,675.10-80,945.60

Finding the Fourth Proportional to 91,904.90, 137,675.10 and 80,945.60

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Solution

The fourth proportional to 91,904.90, 137,675.10 and 80,945.60 is: 121,257.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,904.90 : 137,675.10 = 80,945.60 : x
  2. Step 2: Convert to fraction form
    91,904.90/137,675.10 = 80,945.60/x
  3. Step 3: Cross multiply
    91,904.90x = 137,675.10 × 80,945.60
  4. Step 4: Simplify right side
    91,904.90x = 11,144,193,574.56
  5. Step 5: Solve for x
    x = 11,144,193,574.56/91,904.90
  6. Step 6: Final answer
    x = 121,257.88

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1.5x scale

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.