Home / 124,057.34-171,126.25-78,043.81

Finding the Fourth Proportional to 124,057.34, 171,126.25 and 78,043.81

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Solution

The fourth proportional to 124,057.34, 171,126.25 and 78,043.81 is: 107,654.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,057.34 : 171,126.25 = 78,043.81 : x
  2. Step 2: Convert to fraction form
    124,057.34/171,126.25 = 78,043.81/x
  3. Step 3: Cross multiply
    124,057.34x = 171,126.25 × 78,043.81
  4. Step 4: Simplify right side
    124,057.34x = 13,355,344,541.01
  5. Step 5: Solve for x
    x = 13,355,344,541.01/124,057.34
  6. Step 6: Final answer
    x = 107,654.61

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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.