Home / 97,719.90-146,579.85-81,390.30

Finding the Fourth Proportional to 97,719.90, 146,579.85 and 81,390.30

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Solution

The fourth proportional to 97,719.90, 146,579.85 and 81,390.30 is: 122,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,719.90 : 146,579.85 = 81,390.30 : x
  2. Step 2: Convert to fraction form
    97,719.90/146,579.85 = 81,390.30/x
  3. Step 3: Cross multiply
    97,719.90x = 146,579.85 × 81,390.30
  4. Step 4: Simplify right side
    97,719.90x = 11,930,177,965.46
  5. Step 5: Solve for x
    x = 11,930,177,965.46/97,719.90
  6. Step 6: Final answer
    x = 122,085.45

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Similar ratio
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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.