Home / 121,279.01-181,696.85-87,916.32

Finding the Fourth Proportional to 121,279.01, 181,696.85 and 87,916.32

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Solution

The fourth proportional to 121,279.01, 181,696.85 and 87,916.32 is: 131,713.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,279.01 : 181,696.85 = 87,916.32 : x
  2. Step 2: Convert to fraction form
    121,279.01/181,696.85 = 87,916.32/x
  3. Step 3: Cross multiply
    121,279.01x = 181,696.85 × 87,916.32
  4. Step 4: Simplify right side
    121,279.01x = 15,974,117,968.01
  5. Step 5: Solve for x
    x = 15,974,117,968.01/121,279.01
  6. Step 6: Final answer
    x = 131,713.79

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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.