Home / 129,909.12-179,282.88-73,299.84

Finding the Fourth Proportional to 129,909.12, 179,282.88 and 73,299.84

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Solution

The fourth proportional to 129,909.12, 179,282.88 and 73,299.84 is: 101,158.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,909.12 : 179,282.88 = 73,299.84 : x
  2. Step 2: Convert to fraction form
    129,909.12/179,282.88 = 73,299.84/x
  3. Step 3: Cross multiply
    129,909.12x = 179,282.88 × 73,299.84
  4. Step 4: Simplify right side
    129,909.12x = 13,141,406,418.74
  5. Step 5: Solve for x
    x = 13,141,406,418.74/129,909.12
  6. Step 6: Final answer
    x = 101,158.46

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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.