Home / 98,531.78-135,933.60-72,752.11

Finding the Fourth Proportional to 98,531.78, 135,933.60 and 72,752.11

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Solution

The fourth proportional to 98,531.78, 135,933.60 and 72,752.11 is: 100,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,531.78 : 135,933.60 = 72,752.11 : x
  2. Step 2: Convert to fraction form
    98,531.78/135,933.60 = 72,752.11/x
  3. Step 3: Cross multiply
    98,531.78x = 135,933.60 × 72,752.11
  4. Step 4: Simplify right side
    98,531.78x = 9,889,456,219.90
  5. Step 5: Solve for x
    x = 9,889,456,219.90/98,531.78
  6. Step 6: Final answer
    x = 100,368.19

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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.