Home / 97,218.36-134,082-81,635.85

Finding the Fourth Proportional to 97,218.36, 134,082 and 81,635.85

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Solution

The fourth proportional to 97,218.36, 134,082 and 81,635.85 is: 112,590.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,218.36 : 134,082 = 81,635.85 : x
  2. Step 2: Convert to fraction form
    97,218.36/134,082 = 81,635.85/x
  3. Step 3: Cross multiply
    97,218.36x = 134,082 × 81,635.85
  4. Step 4: Simplify right side
    97,218.36x = 10,945,898,039.70
  5. Step 5: Solve for x
    x = 10,945,898,039.70/97,218.36
  6. Step 6: Final answer
    x = 112,590.85

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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.