Home / 186,066.40-279,013.20-80,831.20

Finding the Fourth Proportional to 186,066.40, 279,013.20 and 80,831.20

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Solution

The fourth proportional to 186,066.40, 279,013.20 and 80,831.20 is: 121,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,066.40 : 279,013.20 = 80,831.20 : x
  2. Step 2: Convert to fraction form
    186,066.40/279,013.20 = 80,831.20/x
  3. Step 3: Cross multiply
    186,066.40x = 279,013.20 × 80,831.20
  4. Step 4: Simplify right side
    186,066.40x = 22,552,971,771.84
  5. Step 5: Solve for x
    x = 22,552,971,771.84/186,066.40
  6. Step 6: Final answer
    x = 121,209.27

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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.