Home / 156,389.70-215,817.96-84,769.68

Finding the Fourth Proportional to 156,389.70, 215,817.96 and 84,769.68

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Solution

The fourth proportional to 156,389.70, 215,817.96 and 84,769.68 is: 116,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,389.70 : 215,817.96 = 84,769.68 : x
  2. Step 2: Convert to fraction form
    156,389.70/215,817.96 = 84,769.68/x
  3. Step 3: Cross multiply
    156,389.70x = 215,817.96 × 84,769.68
  4. Step 4: Simplify right side
    156,389.70x = 18,294,819,407.45
  5. Step 5: Solve for x
    x = 18,294,819,407.45/156,389.70
  6. Step 6: Final answer
    x = 116,982.25

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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.