Home / 146,211.20-219,316.80-121,279.40

Finding the Fourth Proportional to 146,211.20, 219,316.80 and 121,279.40

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Solution

The fourth proportional to 146,211.20, 219,316.80 and 121,279.40 is: 181,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,211.20 : 219,316.80 = 121,279.40 : x
  2. Step 2: Convert to fraction form
    146,211.20/219,316.80 = 121,279.40/x
  3. Step 3: Cross multiply
    146,211.20x = 219,316.80 × 121,279.40
  4. Step 4: Simplify right side
    146,211.20x = 26,598,609,913.92
  5. Step 5: Solve for x
    x = 26,598,609,913.92/146,211.20
  6. Step 6: Final answer
    x = 181,919.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.