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Finding the Fourth Proportional to 130,002.88, 179,416 and 79,003.84

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Solution

The fourth proportional to 130,002.88, 179,416 and 79,003.84 is: 109,032.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,002.88 : 179,416 = 79,003.84 : x
  2. Step 2: Convert to fraction form
    130,002.88/179,416 = 79,003.84/x
  3. Step 3: Cross multiply
    130,002.88x = 179,416 × 79,003.84
  4. Step 4: Simplify right side
    130,002.88x = 14,174,552,957.44
  5. Step 5: Solve for x
    x = 14,174,552,957.44/130,002.88
  6. Step 6: Final answer
    x = 109,032.61

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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.