Home / 111,771.20-154,244.16-61,470.20

Finding the Fourth Proportional to 111,771.20, 154,244.16 and 61,470.20

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Solution

The fourth proportional to 111,771.20, 154,244.16 and 61,470.20 is: 84,828.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,771.20 : 154,244.16 = 61,470.20 : x
  2. Step 2: Convert to fraction form
    111,771.20/154,244.16 = 61,470.20/x
  3. Step 3: Cross multiply
    111,771.20x = 154,244.16 × 61,470.20
  4. Step 4: Simplify right side
    111,771.20x = 9,481,418,592.81
  5. Step 5: Solve for x
    x = 9,481,418,592.81/111,771.20
  6. Step 6: Final answer
    x = 84,828.82

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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.