Home / 145,760.56-218,147-89,636.20

Finding the Fourth Proportional to 145,760.56, 218,147 and 89,636.20

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Solution

The fourth proportional to 145,760.56, 218,147 and 89,636.20 is: 134,150.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,760.56 : 218,147 = 89,636.20 : x
  2. Step 2: Convert to fraction form
    145,760.56/218,147 = 89,636.20/x
  3. Step 3: Cross multiply
    145,760.56x = 218,147 × 89,636.20
  4. Step 4: Simplify right side
    145,760.56x = 19,553,868,121.40
  5. Step 5: Solve for x
    x = 19,553,868,121.40/145,760.56
  6. Step 6: Final answer
    x = 134,150.61

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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.