Home / 129,902.01-179,245.51-78,888.13

Finding the Fourth Proportional to 129,902.01, 179,245.51 and 78,888.13

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Solution

The fourth proportional to 129,902.01, 179,245.51 and 78,888.13 is: 108,853.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,902.01 : 179,245.51 = 78,888.13 : x
  2. Step 2: Convert to fraction form
    129,902.01/179,245.51 = 78,888.13/x
  3. Step 3: Cross multiply
    129,902.01x = 179,245.51 × 78,888.13
  4. Step 4: Simplify right side
    129,902.01x = 14,140,343,094.80
  5. Step 5: Solve for x
    x = 14,140,343,094.80/129,902.01
  6. Step 6: Final answer
    x = 108,853.92

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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.