Home / 121,279.14-181,697.03-87,916.45

Finding the Fourth Proportional to 121,279.14, 181,697.03 and 87,916.45

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Solution

The fourth proportional to 121,279.14, 181,697.03 and 87,916.45 is: 131,713.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,279.14 : 181,697.03 = 87,916.45 : x
  2. Step 2: Convert to fraction form
    121,279.14/181,697.03 = 87,916.45/x
  3. Step 3: Cross multiply
    121,279.14x = 181,697.03 × 87,916.45
  4. Step 4: Simplify right side
    121,279.14x = 15,974,157,413.56
  5. Step 5: Solve for x
    x = 15,974,157,413.56/121,279.14
  6. Step 6: Final answer
    x = 131,713.98

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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.