Home / 109,188.46-150,678.27-61,441.78

Finding the Fourth Proportional to 109,188.46, 150,678.27 and 61,441.78

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Solution

The fourth proportional to 109,188.46, 150,678.27 and 61,441.78 is: 84,788.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,188.46 : 150,678.27 = 61,441.78 : x
  2. Step 2: Convert to fraction form
    109,188.46/150,678.27 = 61,441.78/x
  3. Step 3: Cross multiply
    109,188.46x = 150,678.27 × 61,441.78
  4. Step 4: Simplify right side
    109,188.46x = 9,257,941,116.12
  5. Step 5: Solve for x
    x = 9,257,941,116.12/109,188.46
  6. Step 6: Final answer
    x = 84,788.64

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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.