Home / 109,147.11-150,622.79-61,400.49

Finding the Fourth Proportional to 109,147.11, 150,622.79 and 61,400.49

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Solution

The fourth proportional to 109,147.11, 150,622.79 and 61,400.49 is: 84,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,147.11 : 150,622.79 = 61,400.49 : x
  2. Step 2: Convert to fraction form
    109,147.11/150,622.79 = 61,400.49/x
  3. Step 3: Cross multiply
    109,147.11x = 150,622.79 × 61,400.49
  4. Step 4: Simplify right side
    109,147.11x = 9,248,313,111.17
  5. Step 5: Solve for x
    x = 9,248,313,111.17/109,147.11
  6. Step 6: Final answer
    x = 84,732.55

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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.