Home / 130,479.30-180,058.38-76,767.78

Finding the Fourth Proportional to 130,479.30, 180,058.38 and 76,767.78

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Solution

The fourth proportional to 130,479.30, 180,058.38 and 76,767.78 is: 105,937.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,479.30 : 180,058.38 = 76,767.78 : x
  2. Step 2: Convert to fraction form
    130,479.30/180,058.38 = 76,767.78/x
  3. Step 3: Cross multiply
    130,479.30x = 180,058.38 × 76,767.78
  4. Step 4: Simplify right side
    130,479.30x = 13,822,682,103.00
  5. Step 5: Solve for x
    x = 13,822,682,103.00/130,479.30
  6. Step 6: Final answer
    x = 105,937.74

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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.