Home / 80,902.04-120,720.13-72,496.46

Finding the Fourth Proportional to 80,902.04, 120,720.13 and 72,496.46

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Solution

The fourth proportional to 80,902.04, 120,720.13 and 72,496.46 is: 108,177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,902.04 : 120,720.13 = 72,496.46 : x
  2. Step 2: Convert to fraction form
    80,902.04/120,720.13 = 72,496.46/x
  3. Step 3: Cross multiply
    80,902.04x = 120,720.13 × 72,496.46
  4. Step 4: Simplify right side
    80,902.04x = 8,751,782,075.74
  5. Step 5: Solve for x
    x = 8,751,782,075.74/80,902.04
  6. Step 6: Final answer
    x = 108,177.52

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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.