Home / 123,226.47-170,078.87-77,875.52

Finding the Fourth Proportional to 123,226.47, 170,078.87 and 77,875.52

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Solution

The fourth proportional to 123,226.47, 170,078.87 and 77,875.52 is: 107,484.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,226.47 : 170,078.87 = 77,875.52 : x
  2. Step 2: Convert to fraction form
    123,226.47/170,078.87 = 77,875.52/x
  3. Step 3: Cross multiply
    123,226.47x = 170,078.87 × 77,875.52
  4. Step 4: Simplify right side
    123,226.47x = 13,244,979,786.56
  5. Step 5: Solve for x
    x = 13,244,979,786.56/123,226.47
  6. Step 6: Final answer
    x = 107,484.86

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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.