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Finding the Fourth Proportional to 119,630.10, 179,445.15 and 115,037.40

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Solution

The fourth proportional to 119,630.10, 179,445.15 and 115,037.40 is: 172,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,630.10 : 179,445.15 = 115,037.40 : x
  2. Step 2: Convert to fraction form
    119,630.10/179,445.15 = 115,037.40/x
  3. Step 3: Cross multiply
    119,630.10x = 179,445.15 × 115,037.40
  4. Step 4: Simplify right side
    119,630.10x = 20,642,903,498.61
  5. Step 5: Solve for x
    x = 20,642,903,498.61/119,630.10
  6. Step 6: Final answer
    x = 172,556.10

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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.