Home / 80,937.40-121,406.10-76,012.60

Finding the Fourth Proportional to 80,937.40, 121,406.10 and 76,012.60

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Solution

The fourth proportional to 80,937.40, 121,406.10 and 76,012.60 is: 114,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937.40 : 121,406.10 = 76,012.60 : x
  2. Step 2: Convert to fraction form
    80,937.40/121,406.10 = 76,012.60/x
  3. Step 3: Cross multiply
    80,937.40x = 121,406.10 × 76,012.60
  4. Step 4: Simplify right side
    80,937.40x = 9,228,393,316.86
  5. Step 5: Solve for x
    x = 9,228,393,316.86/80,937.40
  6. Step 6: Final answer
    x = 114,018.90

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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.