Home / 89,859.20-134,702.40-69,857.60

Finding the Fourth Proportional to 89,859.20, 134,702.40 and 69,857.60

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Solution

The fourth proportional to 89,859.20, 134,702.40 and 69,857.60 is: 104,719.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,859.20 : 134,702.40 = 69,857.60 : x
  2. Step 2: Convert to fraction form
    89,859.20/134,702.40 = 69,857.60/x
  3. Step 3: Cross multiply
    89,859.20x = 134,702.40 × 69,857.60
  4. Step 4: Simplify right side
    89,859.20x = 9,409,986,378.24
  5. Step 5: Solve for x
    x = 9,409,986,378.24/89,859.20
  6. Step 6: Final answer
    x = 104,719.23

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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.