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Finding the Fourth Proportional to 130,388.86, 179,937.21 and 73,811.17

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Solution

The fourth proportional to 130,388.86, 179,937.21 and 73,811.17 is: 101,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,388.86 : 179,937.21 = 73,811.17 : x
  2. Step 2: Convert to fraction form
    130,388.86/179,937.21 = 73,811.17/x
  3. Step 3: Cross multiply
    130,388.86x = 179,937.21 × 73,811.17
  4. Step 4: Simplify right side
    130,388.86x = 13,281,375,996.64
  5. Step 5: Solve for x
    x = 13,281,375,996.64/130,388.86
  6. Step 6: Final answer
    x = 101,859.74

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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.