Home / 115,719.68-159,685.63-64,723.57

Finding the Fourth Proportional to 115,719.68, 159,685.63 and 64,723.57

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Solution

The fourth proportional to 115,719.68, 159,685.63 and 64,723.57 is: 89,314.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,719.68 : 159,685.63 = 64,723.57 : x
  2. Step 2: Convert to fraction form
    115,719.68/159,685.63 = 64,723.57/x
  3. Step 3: Cross multiply
    115,719.68x = 159,685.63 × 64,723.57
  4. Step 4: Simplify right side
    115,719.68x = 10,335,424,388.51
  5. Step 5: Solve for x
    x = 10,335,424,388.51/115,719.68
  6. Step 6: Final answer
    x = 89,314.32

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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.