Home / 115,831.32-159,839.40-64,144.71

Finding the Fourth Proportional to 115,831.32, 159,839.40 and 64,144.71

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Solution

The fourth proportional to 115,831.32, 159,839.40 and 64,144.71 is: 88,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,831.32 : 159,839.40 = 64,144.71 : x
  2. Step 2: Convert to fraction form
    115,831.32/159,839.40 = 64,144.71/x
  3. Step 3: Cross multiply
    115,831.32x = 159,839.40 × 64,144.71
  4. Step 4: Simplify right side
    115,831.32x = 10,252,850,839.65
  5. Step 5: Solve for x
    x = 10,252,850,839.65/115,831.32
  6. Step 6: Final answer
    x = 88,515.36

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1.5x scale

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.