Home / 122,145.74-168,565.96-68,431.20

Finding the Fourth Proportional to 122,145.74, 168,565.96 and 68,431.20

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Solution

The fourth proportional to 122,145.74, 168,565.96 and 68,431.20 is: 94,437.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,145.74 : 168,565.96 = 68,431.20 : x
  2. Step 2: Convert to fraction form
    122,145.74/168,565.96 = 68,431.20/x
  3. Step 3: Cross multiply
    122,145.74x = 168,565.96 × 68,431.20
  4. Step 4: Simplify right side
    122,145.74x = 11,535,170,921.95
  5. Step 5: Solve for x
    x = 11,535,170,921.95/122,145.74
  6. Step 6: Final answer
    x = 94,437.77

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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.