Home / 99,476.08-137,136.42-71,132.56

Finding the Fourth Proportional to 99,476.08, 137,136.42 and 71,132.56

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Solution

The fourth proportional to 99,476.08, 137,136.42 and 71,132.56 is: 98,062.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,476.08 : 137,136.42 = 71,132.56 : x
  2. Step 2: Convert to fraction form
    99,476.08/137,136.42 = 71,132.56/x
  3. Step 3: Cross multiply
    99,476.08x = 137,136.42 × 71,132.56
  4. Step 4: Simplify right side
    99,476.08x = 9,754,864,623.84
  5. Step 5: Solve for x
    x = 9,754,864,623.84/99,476.08
  6. Step 6: Final answer
    x = 98,062.41

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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.