Home / 129,863.30-179,212.65-76,180.10

Finding the Fourth Proportional to 129,863.30, 179,212.65 and 76,180.10

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Solution

The fourth proportional to 129,863.30, 179,212.65 and 76,180.10 is: 105,129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,863.30 : 179,212.65 = 76,180.10 : x
  2. Step 2: Convert to fraction form
    129,863.30/179,212.65 = 76,180.10/x
  3. Step 3: Cross multiply
    129,863.30x = 179,212.65 × 76,180.10
  4. Step 4: Simplify right side
    129,863.30x = 13,652,437,598.27
  5. Step 5: Solve for x
    x = 13,652,437,598.27/129,863.30
  6. Step 6: Final answer
    x = 105,129.30

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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.