Home / 111,948.66-154,458.54-77,918.94

Finding the Fourth Proportional to 111,948.66, 154,458.54 and 77,918.94

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Solution

The fourth proportional to 111,948.66, 154,458.54 and 77,918.94 is: 107,506.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,948.66 : 154,458.54 = 77,918.94 : x
  2. Step 2: Convert to fraction form
    111,948.66/154,458.54 = 77,918.94/x
  3. Step 3: Cross multiply
    111,948.66x = 154,458.54 × 77,918.94
  4. Step 4: Simplify right side
    111,948.66x = 12,035,245,710.75
  5. Step 5: Solve for x
    x = 12,035,245,710.75/111,948.66
  6. Step 6: Final answer
    x = 107,506.83

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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.