Home / 90,203.39-124,398.43-77,452.57

Finding the Fourth Proportional to 90,203.39, 124,398.43 and 77,452.57

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Solution

The fourth proportional to 90,203.39, 124,398.43 and 77,452.57 is: 106,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,203.39 : 124,398.43 = 77,452.57 : x
  2. Step 2: Convert to fraction form
    90,203.39/124,398.43 = 77,452.57/x
  3. Step 3: Cross multiply
    90,203.39x = 124,398.43 × 77,452.57
  4. Step 4: Simplify right side
    90,203.39x = 9,634,978,107.47
  5. Step 5: Solve for x
    x = 9,634,978,107.47/90,203.39
  6. Step 6: Final answer
    x = 106,813.92

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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.