Home / 145,564.38-218,115.72-112,365.72

Finding the Fourth Proportional to 145,564.38, 218,115.72 and 112,365.72

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Solution

The fourth proportional to 145,564.38, 218,115.72 and 112,365.72 is: 168,370.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,564.38 : 218,115.72 = 112,365.72 : x
  2. Step 2: Convert to fraction form
    145,564.38/218,115.72 = 112,365.72/x
  3. Step 3: Cross multiply
    145,564.38x = 218,115.72 × 112,365.72
  4. Step 4: Simplify right side
    145,564.38x = 24,508,729,921.12
  5. Step 5: Solve for x
    x = 24,508,729,921.12/145,564.38
  6. Step 6: Final answer
    x = 168,370.38

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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.