Home / 88,321.04-121,758.12-63,126.80

Finding the Fourth Proportional to 88,321.04, 121,758.12 and 63,126.80

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Solution

The fourth proportional to 88,321.04, 121,758.12 and 63,126.80 is: 87,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,321.04 : 121,758.12 = 63,126.80 : x
  2. Step 2: Convert to fraction form
    88,321.04/121,758.12 = 63,126.80/x
  3. Step 3: Cross multiply
    88,321.04x = 121,758.12 × 63,126.80
  4. Step 4: Simplify right side
    88,321.04x = 7,686,200,489.62
  5. Step 5: Solve for x
    x = 7,686,200,489.62/88,321.04
  6. Step 6: Final answer
    x = 87,025.70

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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.