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Finding the Fourth Proportional to 130,134, 179,584.92 and 70,518

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Solution

The fourth proportional to 130,134, 179,584.92 and 70,518 is: 97,314.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,134 : 179,584.92 = 70,518 : x
  2. Step 2: Convert to fraction form
    130,134/179,584.92 = 70,518/x
  3. Step 3: Cross multiply
    130,134x = 179,584.92 × 70,518
  4. Step 4: Simplify right side
    130,134x = 12,663,969,388.56
  5. Step 5: Solve for x
    x = 12,663,969,388.56/130,134
  6. Step 6: Final answer
    x = 97,314.84

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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.