Home / 190,831.68-286,077.42-72,422.64

Finding the Fourth Proportional to 190,831.68, 286,077.42 and 72,422.64

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Solution

The fourth proportional to 190,831.68, 286,077.42 and 72,422.64 is: 108,569.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,831.68 : 286,077.42 = 72,422.64 : x
  2. Step 2: Convert to fraction form
    190,831.68/286,077.42 = 72,422.64/x
  3. Step 3: Cross multiply
    190,831.68x = 286,077.42 × 72,422.64
  4. Step 4: Simplify right side
    190,831.68x = 20,718,482,000.79
  5. Step 5: Solve for x
    x = 20,718,482,000.79/190,831.68
  6. Step 6: Final answer
    x = 108,569.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.