Home / 91,472.49-137,031.19-67,413.09

Finding the Fourth Proportional to 91,472.49, 137,031.19 and 67,413.09

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Solution

The fourth proportional to 91,472.49, 137,031.19 and 67,413.09 is: 100,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,472.49 : 137,031.19 = 67,413.09 : x
  2. Step 2: Convert to fraction form
    91,472.49/137,031.19 = 67,413.09/x
  3. Step 3: Cross multiply
    91,472.49x = 137,031.19 × 67,413.09
  4. Step 4: Simplify right side
    91,472.49x = 9,237,695,607.21
  5. Step 5: Solve for x
    x = 9,237,695,607.21/91,472.49
  6. Step 6: Final answer
    x = 100,988.79

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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.