Home / 98,143.74-135,302.31-66,262.14

Finding the Fourth Proportional to 98,143.74, 135,302.31 and 66,262.14

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Solution

The fourth proportional to 98,143.74, 135,302.31 and 66,262.14 is: 91,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,143.74 : 135,302.31 = 66,262.14 : x
  2. Step 2: Convert to fraction form
    98,143.74/135,302.31 = 66,262.14/x
  3. Step 3: Cross multiply
    98,143.74x = 135,302.31 × 66,262.14
  4. Step 4: Simplify right side
    98,143.74x = 8,965,420,607.54
  5. Step 5: Solve for x
    x = 8,965,420,607.54/98,143.74
  6. Step 6: Final answer
    x = 91,349.90

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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.