Home / 115,739.84-159,685.54-75,438.89

Finding the Fourth Proportional to 115,739.84, 159,685.54 and 75,438.89

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Solution

The fourth proportional to 115,739.84, 159,685.54 and 75,438.89 is: 104,082.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,739.84 : 159,685.54 = 75,438.89 : x
  2. Step 2: Convert to fraction form
    115,739.84/159,685.54 = 75,438.89/x
  3. Step 3: Cross multiply
    115,739.84x = 159,685.54 × 75,438.89
  4. Step 4: Simplify right side
    115,739.84x = 12,046,500,380.16
  5. Step 5: Solve for x
    x = 12,046,500,380.16/115,739.84
  6. Step 6: Final answer
    x = 104,082.58

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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.