Home / 129,273.06-178,374.96-71,904.90

Finding the Fourth Proportional to 129,273.06, 178,374.96 and 71,904.90

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Solution

The fourth proportional to 129,273.06, 178,374.96 and 71,904.90 is: 99,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,273.06 : 178,374.96 = 71,904.90 : x
  2. Step 2: Convert to fraction form
    129,273.06/178,374.96 = 71,904.90/x
  3. Step 3: Cross multiply
    129,273.06x = 178,374.96 × 71,904.90
  4. Step 4: Simplify right side
    129,273.06x = 12,826,033,661.30
  5. Step 5: Solve for x
    x = 12,826,033,661.30/129,273.06
  6. Step 6: Final answer
    x = 99,216.60

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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.