Home / 129,218.40-194,259.60-112,111.20

Finding the Fourth Proportional to 129,218.40, 194,259.60 and 112,111.20

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Solution

The fourth proportional to 129,218.40, 194,259.60 and 112,111.20 is: 168,541.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,218.40 : 194,259.60 = 112,111.20 : x
  2. Step 2: Convert to fraction form
    129,218.40/194,259.60 = 112,111.20/x
  3. Step 3: Cross multiply
    129,218.40x = 194,259.60 × 112,111.20
  4. Step 4: Simplify right side
    129,218.40x = 21,778,676,867.52
  5. Step 5: Solve for x
    x = 21,778,676,867.52/129,218.40
  6. Step 6: Final answer
    x = 168,541.61

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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.