Home / 156,364.14-215,781.66-84,743.40

Finding the Fourth Proportional to 156,364.14, 215,781.66 and 84,743.40

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Solution

The fourth proportional to 156,364.14, 215,781.66 and 84,743.40 is: 116,945.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,364.14 : 215,781.66 = 84,743.40 : x
  2. Step 2: Convert to fraction form
    156,364.14/215,781.66 = 84,743.40/x
  3. Step 3: Cross multiply
    156,364.14x = 215,781.66 × 84,743.40
  4. Step 4: Simplify right side
    156,364.14x = 18,286,071,526.04
  5. Step 5: Solve for x
    x = 18,286,071,526.04/156,364.14
  6. Step 6: Final answer
    x = 116,945.43

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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.