Home / 115,282.75-159,090.20-64,981.75

Finding the Fourth Proportional to 115,282.75, 159,090.20 and 64,981.75

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Solution

The fourth proportional to 115,282.75, 159,090.20 and 64,981.75 is: 89,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,282.75 : 159,090.20 = 64,981.75 : x
  2. Step 2: Convert to fraction form
    115,282.75/159,090.20 = 64,981.75/x
  3. Step 3: Cross multiply
    115,282.75x = 159,090.20 × 64,981.75
  4. Step 4: Simplify right side
    115,282.75x = 10,337,959,603.85
  5. Step 5: Solve for x
    x = 10,337,959,603.85/115,282.75
  6. Step 6: Final answer
    x = 89,674.82

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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.