Home / 261,630.20-392,445.30-112,039.40

Finding the Fourth Proportional to 261,630.20, 392,445.30 and 112,039.40

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Solution

The fourth proportional to 261,630.20, 392,445.30 and 112,039.40 is: 168,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,630.20 : 392,445.30 = 112,039.40 : x
  2. Step 2: Convert to fraction form
    261,630.20/392,445.30 = 112,039.40/x
  3. Step 3: Cross multiply
    261,630.20x = 392,445.30 × 112,039.40
  4. Step 4: Simplify right side
    261,630.20x = 43,969,335,944.82
  5. Step 5: Solve for x
    x = 43,969,335,944.82/261,630.20
  6. Step 6: Final answer
    x = 168,059.10

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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.