Home / 103,455.28-142,768.38-58,743.28

Finding the Fourth Proportional to 103,455.28, 142,768.38 and 58,743.28

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Solution

The fourth proportional to 103,455.28, 142,768.38 and 58,743.28 is: 81,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,455.28 : 142,768.38 = 58,743.28 : x
  2. Step 2: Convert to fraction form
    103,455.28/142,768.38 = 58,743.28/x
  3. Step 3: Cross multiply
    103,455.28x = 142,768.38 × 58,743.28
  4. Step 4: Simplify right side
    103,455.28x = 8,386,682,921.49
  5. Step 5: Solve for x
    x = 8,386,682,921.49/103,455.28
  6. Step 6: Final answer
    x = 81,065.78

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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.