Home / 82,764.60-124,219.80-66,143.40

Finding the Fourth Proportional to 82,764.60, 124,219.80 and 66,143.40

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Solution

The fourth proportional to 82,764.60, 124,219.80 and 66,143.40 is: 99,273.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,764.60 : 124,219.80 = 66,143.40 : x
  2. Step 2: Convert to fraction form
    82,764.60/124,219.80 = 66,143.40/x
  3. Step 3: Cross multiply
    82,764.60x = 124,219.80 × 66,143.40
  4. Step 4: Simplify right side
    82,764.60x = 8,216,319,919.32
  5. Step 5: Solve for x
    x = 8,216,319,919.32/82,764.60
  6. Step 6: Final answer
    x = 99,273.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.