Home / 156,389.13-215,817.26-84,769.11

Finding the Fourth Proportional to 156,389.13, 215,817.26 and 84,769.11

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Solution

The fourth proportional to 156,389.13, 215,817.26 and 84,769.11 is: 116,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,389.13 : 215,817.26 = 84,769.11 : x
  2. Step 2: Convert to fraction form
    156,389.13/215,817.26 = 84,769.11/x
  3. Step 3: Cross multiply
    156,389.13x = 215,817.26 × 84,769.11
  4. Step 4: Simplify right side
    156,389.13x = 18,294,636,628.99
  5. Step 5: Solve for x
    x = 18,294,636,628.99/156,389.13
  6. Step 6: Final answer
    x = 116,981.51

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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.