Home / 109,218.12-150,735.51-61,480.86

Finding the Fourth Proportional to 109,218.12, 150,735.51 and 61,480.86

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Solution

The fourth proportional to 109,218.12, 150,735.51 and 61,480.86 is: 84,851.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,218.12 : 150,735.51 = 61,480.86 : x
  2. Step 2: Convert to fraction form
    109,218.12/150,735.51 = 61,480.86/x
  3. Step 3: Cross multiply
    109,218.12x = 150,735.51 × 61,480.86
  4. Step 4: Simplify right side
    109,218.12x = 9,267,348,787.34
  5. Step 5: Solve for x
    x = 9,267,348,787.34/109,218.12
  6. Step 6: Final answer
    x = 84,851.75

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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.