Home / 148,719.91-205,220.77-85,047.43

Finding the Fourth Proportional to 148,719.91, 205,220.77 and 85,047.43

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Solution

The fourth proportional to 148,719.91, 205,220.77 and 85,047.43 is: 117,358.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,719.91 : 205,220.77 = 85,047.43 : x
  2. Step 2: Convert to fraction form
    148,719.91/205,220.77 = 85,047.43/x
  3. Step 3: Cross multiply
    148,719.91x = 205,220.77 × 85,047.43
  4. Step 4: Simplify right side
    148,719.91x = 17,453,499,071.12
  5. Step 5: Solve for x
    x = 17,453,499,071.12/148,719.91
  6. Step 6: Final answer
    x = 117,358.19

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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.