Home / 129,746.74-179,020.08-78,758.24

Finding the Fourth Proportional to 129,746.74, 179,020.08 and 78,758.24

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Solution

The fourth proportional to 129,746.74, 179,020.08 and 78,758.24 is: 108,667.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,746.74 : 179,020.08 = 78,758.24 : x
  2. Step 2: Convert to fraction form
    129,746.74/179,020.08 = 78,758.24/x
  3. Step 3: Cross multiply
    129,746.74x = 179,020.08 × 78,758.24
  4. Step 4: Simplify right side
    129,746.74x = 14,099,306,425.46
  5. Step 5: Solve for x
    x = 14,099,306,425.46/129,746.74
  6. Step 6: Final answer
    x = 108,667.91

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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.