Home / 156,032.12-215,323.11-84,411.92

Finding the Fourth Proportional to 156,032.12, 215,323.11 and 84,411.92

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Solution

The fourth proportional to 156,032.12, 215,323.11 and 84,411.92 is: 116,487.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,032.12 : 215,323.11 = 84,411.92 : x
  2. Step 2: Convert to fraction form
    156,032.12/215,323.11 = 84,411.92/x
  3. Step 3: Cross multiply
    156,032.12x = 215,323.11 × 84,411.92
  4. Step 4: Simplify right side
    156,032.12x = 18,175,837,673.78
  5. Step 5: Solve for x
    x = 18,175,837,673.78/156,032.12
  6. Step 6: Final answer
    x = 116,487.79

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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.