Home / 130,619.88-180,275.13-79,662.18

Finding the Fourth Proportional to 130,619.88, 180,275.13 and 79,662.18

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Solution

The fourth proportional to 130,619.88, 180,275.13 and 79,662.18 is: 109,945.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,619.88 : 180,275.13 = 79,662.18 : x
  2. Step 2: Convert to fraction form
    130,619.88/180,275.13 = 79,662.18/x
  3. Step 3: Cross multiply
    130,619.88x = 180,275.13 × 79,662.18
  4. Step 4: Simplify right side
    130,619.88x = 14,361,109,855.58
  5. Step 5: Solve for x
    x = 14,361,109,855.58/130,619.88
  6. Step 6: Final answer
    x = 109,945.82

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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.