Home / 156,389.48-215,817.76-84,769.28

Finding the Fourth Proportional to 156,389.48, 215,817.76 and 84,769.28

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Solution

The fourth proportional to 156,389.48, 215,817.76 and 84,769.28 is: 116,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,389.48 : 215,817.76 = 84,769.28 : x
  2. Step 2: Convert to fraction form
    156,389.48/215,817.76 = 84,769.28/x
  3. Step 3: Cross multiply
    156,389.48x = 215,817.76 × 84,769.28
  4. Step 4: Simplify right side
    156,389.48x = 18,294,716,126.41
  5. Step 5: Solve for x
    x = 18,294,716,126.41/156,389.48
  6. Step 6: Final answer
    x = 116,981.76

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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.