Home / 153,837.87-212,295.81-85,854.12

Finding the Fourth Proportional to 153,837.87, 212,295.81 and 85,854.12

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Solution

The fourth proportional to 153,837.87, 212,295.81 and 85,854.12 is: 118,478.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,837.87 : 212,295.81 = 85,854.12 : x
  2. Step 2: Convert to fraction form
    153,837.87/212,295.81 = 85,854.12/x
  3. Step 3: Cross multiply
    153,837.87x = 212,295.81 × 85,854.12
  4. Step 4: Simplify right side
    153,837.87x = 18,226,469,517.97
  5. Step 5: Solve for x
    x = 18,226,469,517.97/153,837.87
  6. Step 6: Final answer
    x = 118,478.43

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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.