Home / 143,823.60-215,929.80-91,335.60

Finding the Fourth Proportional to 143,823.60, 215,929.80 and 91,335.60

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Solution

The fourth proportional to 143,823.60, 215,929.80 and 91,335.60 is: 137,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,823.60 : 215,929.80 = 91,335.60 : x
  2. Step 2: Convert to fraction form
    143,823.60/215,929.80 = 91,335.60/x
  3. Step 3: Cross multiply
    143,823.60x = 215,929.80 × 91,335.60
  4. Step 4: Simplify right side
    143,823.60x = 19,722,077,840.88
  5. Step 5: Solve for x
    x = 19,722,077,840.88/143,823.60
  6. Step 6: Final answer
    x = 137,126.85

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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.