Home / 111,228.24-153,420-68,807.76

Finding the Fourth Proportional to 111,228.24, 153,420 and 68,807.76

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Solution

The fourth proportional to 111,228.24, 153,420 and 68,807.76 is: 94,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,228.24 : 153,420 = 68,807.76 : x
  2. Step 2: Convert to fraction form
    111,228.24/153,420 = 68,807.76/x
  3. Step 3: Cross multiply
    111,228.24x = 153,420 × 68,807.76
  4. Step 4: Simplify right side
    111,228.24x = 10,556,486,539.20
  5. Step 5: Solve for x
    x = 10,556,486,539.20/111,228.24
  6. Step 6: Final answer
    x = 94,908.33

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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.