Home / 111,988.48-154,544.52-61,687.36

Finding the Fourth Proportional to 111,988.48, 154,544.52 and 61,687.36

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Solution

The fourth proportional to 111,988.48, 154,544.52 and 61,687.36 is: 85,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,988.48 : 154,544.52 = 61,687.36 : x
  2. Step 2: Convert to fraction form
    111,988.48/154,544.52 = 61,687.36/x
  3. Step 3: Cross multiply
    111,988.48x = 154,544.52 × 61,687.36
  4. Step 4: Simplify right side
    111,988.48x = 9,533,443,441.27
  5. Step 5: Solve for x
    x = 9,533,443,441.27/111,988.48
  6. Step 6: Final answer
    x = 85,128.79

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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.