Home / 115,943.68-159,965.95-64,949.53

Finding the Fourth Proportional to 115,943.68, 159,965.95 and 64,949.53

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Solution

The fourth proportional to 115,943.68, 159,965.95 and 64,949.53 is: 89,609.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,943.68 : 159,965.95 = 64,949.53 : x
  2. Step 2: Convert to fraction form
    115,943.68/159,965.95 = 64,949.53/x
  3. Step 3: Cross multiply
    115,943.68x = 159,965.95 × 64,949.53
  4. Step 4: Simplify right side
    115,943.68x = 10,389,712,143.93
  5. Step 5: Solve for x
    x = 10,389,712,143.93/115,943.68
  6. Step 6: Final answer
    x = 89,609.99

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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.