Home / 115,921.85-159,970.29-64,934.42

Finding the Fourth Proportional to 115,921.85, 159,970.29 and 64,934.42

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Solution

The fourth proportional to 115,921.85, 159,970.29 and 64,934.42 is: 89,608.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,921.85 : 159,970.29 = 64,934.42 : x
  2. Step 2: Convert to fraction form
    115,921.85/159,970.29 = 64,934.42/x
  3. Step 3: Cross multiply
    115,921.85x = 159,970.29 × 64,934.42
  4. Step 4: Simplify right side
    115,921.85x = 10,387,577,198.53
  5. Step 5: Solve for x
    x = 10,387,577,198.53/115,921.85
  6. Step 6: Final answer
    x = 89,608.45

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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.