Home / 185,631.23-278,402.19-85,695.47

Finding the Fourth Proportional to 185,631.23, 278,402.19 and 85,695.47

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Solution

The fourth proportional to 185,631.23, 278,402.19 and 85,695.47 is: 128,522.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,631.23 : 278,402.19 = 85,695.47 : x
  2. Step 2: Convert to fraction form
    185,631.23/278,402.19 = 85,695.47/x
  3. Step 3: Cross multiply
    185,631.23x = 278,402.19 × 85,695.47
  4. Step 4: Simplify right side
    185,631.23x = 23,857,805,129.07
  5. Step 5: Solve for x
    x = 23,857,805,129.07/185,631.23
  6. Step 6: Final answer
    x = 128,522.59

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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.