Home / 92,509.20-138,909.60-53,143.20

Finding the Fourth Proportional to 92,509.20, 138,909.60 and 53,143.20

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Solution

The fourth proportional to 92,509.20, 138,909.60 and 53,143.20 is: 79,798.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,509.20 : 138,909.60 = 53,143.20 : x
  2. Step 2: Convert to fraction form
    92,509.20/138,909.60 = 53,143.20/x
  3. Step 3: Cross multiply
    92,509.20x = 138,909.60 × 53,143.20
  4. Step 4: Simplify right side
    92,509.20x = 7,382,100,654.72
  5. Step 5: Solve for x
    x = 7,382,100,654.72/92,509.20
  6. Step 6: Final answer
    x = 79,798.56

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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.