Home / 156,209.47-215,570.10-84,589.50

Finding the Fourth Proportional to 156,209.47, 215,570.10 and 84,589.50

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Solution

The fourth proportional to 156,209.47, 215,570.10 and 84,589.50 is: 116,734.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,209.47 : 215,570.10 = 84,589.50 : x
  2. Step 2: Convert to fraction form
    156,209.47/215,570.10 = 84,589.50/x
  3. Step 3: Cross multiply
    156,209.47x = 215,570.10 × 84,589.50
  4. Step 4: Simplify right side
    156,209.47x = 18,234,966,973.95
  5. Step 5: Solve for x
    x = 18,234,966,973.95/156,209.47
  6. Step 6: Final answer
    x = 116,734.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.