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Finding the Fourth Proportional to 129,818, 179,149.38 and 70,202

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Solution

The fourth proportional to 129,818, 179,149.38 and 70,202 is: 96,879.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,818 : 179,149.38 = 70,202 : x
  2. Step 2: Convert to fraction form
    129,818/179,149.38 = 70,202/x
  3. Step 3: Cross multiply
    129,818x = 179,149.38 × 70,202
  4. Step 4: Simplify right side
    129,818x = 12,576,644,774.76
  5. Step 5: Solve for x
    x = 12,576,644,774.76/129,818
  6. Step 6: Final answer
    x = 96,879.05

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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.