Home / 91,725.20-137,587.80-83,560.40

Finding the Fourth Proportional to 91,725.20, 137,587.80 and 83,560.40

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Solution

The fourth proportional to 91,725.20, 137,587.80 and 83,560.40 is: 125,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,725.20 : 137,587.80 = 83,560.40 : x
  2. Step 2: Convert to fraction form
    91,725.20/137,587.80 = 83,560.40/x
  3. Step 3: Cross multiply
    91,725.20x = 137,587.80 × 83,560.40
  4. Step 4: Simplify right side
    91,725.20x = 11,496,891,603.12
  5. Step 5: Solve for x
    x = 11,496,891,603.12/91,725.20
  6. Step 6: Final answer
    x = 125,340.60

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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.