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Finding the Fourth Proportional to 167,392.68, 231,004.95 and 90,911.76

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Solution

The fourth proportional to 167,392.68, 231,004.95 and 90,911.76 is: 125,459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,392.68 : 231,004.95 = 90,911.76 : x
  2. Step 2: Convert to fraction form
    167,392.68/231,004.95 = 90,911.76/x
  3. Step 3: Cross multiply
    167,392.68x = 231,004.95 × 90,911.76
  4. Step 4: Simplify right side
    167,392.68x = 21,001,066,573.21
  5. Step 5: Solve for x
    x = 21,001,066,573.21/167,392.68
  6. Step 6: Final answer
    x = 125,459.89

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1.5x scale

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.