Home / 129,854.13-179,199.21-72,492.42

Finding the Fourth Proportional to 129,854.13, 179,199.21 and 72,492.42

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Solution

The fourth proportional to 129,854.13, 179,199.21 and 72,492.42 is: 100,039.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,854.13 : 179,199.21 = 72,492.42 : x
  2. Step 2: Convert to fraction form
    129,854.13/179,199.21 = 72,492.42/x
  3. Step 3: Cross multiply
    129,854.13x = 179,199.21 × 72,492.42
  4. Step 4: Simplify right side
    129,854.13x = 12,990,584,394.99
  5. Step 5: Solve for x
    x = 12,990,584,394.99/129,854.13
  6. Step 6: Final answer
    x = 100,039.82

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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.