Home / 143,613.91-215,420.73-38,430.10

Finding the Fourth Proportional to 143,613.91, 215,420.73 and 38,430.10

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Solution

The fourth proportional to 143,613.91, 215,420.73 and 38,430.10 is: 57,645.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,613.91 : 215,420.73 = 38,430.10 : x
  2. Step 2: Convert to fraction form
    143,613.91/215,420.73 = 38,430.10/x
  3. Step 3: Cross multiply
    143,613.91x = 215,420.73 × 38,430.10
  4. Step 4: Simplify right side
    143,613.91x = 8,278,640,195.97
  5. Step 5: Solve for x
    x = 8,278,640,195.97/143,613.91
  6. Step 6: Final answer
    x = 57,645.11

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1.5x scale

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.