Home / 103,218.20-142,440.52-57,277.38

Finding the Fourth Proportional to 103,218.20, 142,440.52 and 57,277.38

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Solution

The fourth proportional to 103,218.20, 142,440.52 and 57,277.38 is: 79,042.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,218.20 : 142,440.52 = 57,277.38 : x
  2. Step 2: Convert to fraction form
    103,218.20/142,440.52 = 57,277.38/x
  3. Step 3: Cross multiply
    103,218.20x = 142,440.52 × 57,277.38
  4. Step 4: Simplify right side
    103,218.20x = 8,158,619,791.44
  5. Step 5: Solve for x
    x = 8,158,619,791.44/103,218.20
  6. Step 6: Final answer
    x = 79,042.45

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1.5x scale

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.