Home / 157,638.12-217,777.62-103,319.22

Finding the Fourth Proportional to 157,638.12, 217,777.62 and 103,319.22

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Solution

The fourth proportional to 157,638.12, 217,777.62 and 103,319.22 is: 142,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,638.12 : 217,777.62 = 103,319.22 : x
  2. Step 2: Convert to fraction form
    157,638.12/217,777.62 = 103,319.22/x
  3. Step 3: Cross multiply
    157,638.12x = 217,777.62 × 103,319.22
  4. Step 4: Simplify right side
    157,638.12x = 22,500,613,831.86
  5. Step 5: Solve for x
    x = 22,500,613,831.86/157,638.12
  6. Step 6: Final answer
    x = 142,735.87

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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.