Home / 129,891.09-179,236.02-75,432.63

Finding the Fourth Proportional to 129,891.09, 179,236.02 and 75,432.63

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Solution

The fourth proportional to 129,891.09, 179,236.02 and 75,432.63 is: 104,089.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,891.09 : 179,236.02 = 75,432.63 : x
  2. Step 2: Convert to fraction form
    129,891.09/179,236.02 = 75,432.63/x
  3. Step 3: Cross multiply
    129,891.09x = 179,236.02 × 75,432.63
  4. Step 4: Simplify right side
    129,891.09x = 13,520,244,379.33
  5. Step 5: Solve for x
    x = 13,520,244,379.33/129,891.09
  6. Step 6: Final answer
    x = 104,089.08

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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.