Home / 80,338.02-119,788.76-78,131.04

Finding the Fourth Proportional to 80,338.02, 119,788.76 and 78,131.04

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Solution

The fourth proportional to 80,338.02, 119,788.76 and 78,131.04 is: 116,498.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,338.02 : 119,788.76 = 78,131.04 : x
  2. Step 2: Convert to fraction form
    80,338.02/119,788.76 = 78,131.04/x
  3. Step 3: Cross multiply
    80,338.02x = 119,788.76 × 78,131.04
  4. Step 4: Simplify right side
    80,338.02x = 9,359,220,399.11
  5. Step 5: Solve for x
    x = 9,359,220,399.11/80,338.02
  6. Step 6: Final answer
    x = 116,498.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.