Home / 111,208.47-166,615.86-92,378.40

Finding the Fourth Proportional to 111,208.47, 166,615.86 and 92,378.40

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Solution

The fourth proportional to 111,208.47, 166,615.86 and 92,378.40 is: 138,404.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,208.47 : 166,615.86 = 92,378.40 : x
  2. Step 2: Convert to fraction form
    111,208.47/166,615.86 = 92,378.40/x
  3. Step 3: Cross multiply
    111,208.47x = 166,615.86 × 92,378.40
  4. Step 4: Simplify right side
    111,208.47x = 15,391,706,561.42
  5. Step 5: Solve for x
    x = 15,391,706,561.42/111,208.47
  6. Step 6: Final answer
    x = 138,404.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.