Home / 129,829.64-179,178.54-76,116.92

Finding the Fourth Proportional to 129,829.64, 179,178.54 and 76,116.92

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Solution

The fourth proportional to 129,829.64, 179,178.54 and 76,116.92 is: 105,049.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,829.64 : 179,178.54 = 76,116.92 : x
  2. Step 2: Convert to fraction form
    129,829.64/179,178.54 = 76,116.92/x
  3. Step 3: Cross multiply
    129,829.64x = 179,178.54 × 76,116.92
  4. Step 4: Simplify right side
    129,829.64x = 13,638,518,594.90
  5. Step 5: Solve for x
    x = 13,638,518,594.90/129,829.64
  6. Step 6: Final answer
    x = 105,049.34

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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.