Home / 103,983.52-143,613.84-70,391.20

Finding the Fourth Proportional to 103,983.52, 143,613.84 and 70,391.20

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Solution

The fourth proportional to 103,983.52, 143,613.84 and 70,391.20 is: 97,218.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,983.52 : 143,613.84 = 70,391.20 : x
  2. Step 2: Convert to fraction form
    103,983.52/143,613.84 = 70,391.20/x
  3. Step 3: Cross multiply
    103,983.52x = 143,613.84 × 70,391.20
  4. Step 4: Simplify right side
    103,983.52x = 10,109,150,534.21
  5. Step 5: Solve for x
    x = 10,109,150,534.21/103,983.52
  6. Step 6: Final answer
    x = 97,218.78

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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.