Home / 91,120.80-125,560.08-67,209.60

Finding the Fourth Proportional to 91,120.80, 125,560.08 and 67,209.60

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Solution

The fourth proportional to 91,120.80, 125,560.08 and 67,209.60 is: 92,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,120.80 : 125,560.08 = 67,209.60 : x
  2. Step 2: Convert to fraction form
    91,120.80/125,560.08 = 67,209.60/x
  3. Step 3: Cross multiply
    91,120.80x = 125,560.08 × 67,209.60
  4. Step 4: Simplify right side
    91,120.80x = 8,438,842,752.77
  5. Step 5: Solve for x
    x = 8,438,842,752.77/91,120.80
  6. Step 6: Final answer
    x = 92,611.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.