Home / 130,382.40-179,921.52-80,071.68

Finding the Fourth Proportional to 130,382.40, 179,921.52 and 80,071.68

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Solution

The fourth proportional to 130,382.40, 179,921.52 and 80,071.68 is: 110,495.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,382.40 : 179,921.52 = 80,071.68 : x
  2. Step 2: Convert to fraction form
    130,382.40/179,921.52 = 80,071.68/x
  3. Step 3: Cross multiply
    130,382.40x = 179,921.52 × 80,071.68
  4. Step 4: Simplify right side
    130,382.40x = 14,406,618,374.55
  5. Step 5: Solve for x
    x = 14,406,618,374.55/130,382.40
  6. Step 6: Final answer
    x = 110,495.12

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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.