Home / 91,749.20-137,623.80-83,584.40

Finding the Fourth Proportional to 91,749.20, 137,623.80 and 83,584.40

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Solution

The fourth proportional to 91,749.20, 137,623.80 and 83,584.40 is: 125,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,749.20 : 137,623.80 = 83,584.40 : x
  2. Step 2: Convert to fraction form
    91,749.20/137,623.80 = 83,584.40/x
  3. Step 3: Cross multiply
    91,749.20x = 137,623.80 × 83,584.40
  4. Step 4: Simplify right side
    91,749.20x = 11,503,202,748.72
  5. Step 5: Solve for x
    x = 11,503,202,748.72/91,749.20
  6. Step 6: Final answer
    x = 125,376.60

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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.