Home / 163,441.62-245,144.07-45,129.78

Finding the Fourth Proportional to 163,441.62, 245,144.07 and 45,129.78

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Solution

The fourth proportional to 163,441.62, 245,144.07 and 45,129.78 is: 67,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,441.62 : 245,144.07 = 45,129.78 : x
  2. Step 2: Convert to fraction form
    163,441.62/245,144.07 = 45,129.78/x
  3. Step 3: Cross multiply
    163,441.62x = 245,144.07 × 45,129.78
  4. Step 4: Simplify right side
    163,441.62x = 11,063,297,947.40
  5. Step 5: Solve for x
    x = 11,063,297,947.40/163,441.62
  6. Step 6: Final answer
    x = 67,689.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.