Home / 156,285.56-215,673.36-84,665.36

Finding the Fourth Proportional to 156,285.56, 215,673.36 and 84,665.36

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Solution

The fourth proportional to 156,285.56, 215,673.36 and 84,665.36 is: 116,837.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,285.56 : 215,673.36 = 84,665.36 : x
  2. Step 2: Convert to fraction form
    156,285.56/215,673.36 = 84,665.36/x
  3. Step 3: Cross multiply
    156,285.56x = 215,673.36 × 84,665.36
  4. Step 4: Simplify right side
    156,285.56x = 18,260,062,666.81
  5. Step 5: Solve for x
    x = 18,260,062,666.81/156,285.56
  6. Step 6: Final answer
    x = 116,837.81

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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.