Home / 111,542.12-153,918.66-63,787.72

Finding the Fourth Proportional to 111,542.12, 153,918.66 and 63,787.72

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Solution

The fourth proportional to 111,542.12, 153,918.66 and 63,787.72 is: 88,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,542.12 : 153,918.66 = 63,787.72 : x
  2. Step 2: Convert to fraction form
    111,542.12/153,918.66 = 63,787.72/x
  3. Step 3: Cross multiply
    111,542.12x = 153,918.66 × 63,787.72
  4. Step 4: Simplify right side
    111,542.12x = 9,818,120,386.86
  5. Step 5: Solve for x
    x = 9,818,120,386.86/111,542.12
  6. Step 6: Final answer
    x = 88,021.64

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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.