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Finding the Fourth Proportional to 110,187.40, 165,434.70 and 68,715.40

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Solution

The fourth proportional to 110,187.40, 165,434.70 and 68,715.40 is: 103,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,187.40 : 165,434.70 = 68,715.40 : x
  2. Step 2: Convert to fraction form
    110,187.40/165,434.70 = 68,715.40/x
  3. Step 3: Cross multiply
    110,187.40x = 165,434.70 × 68,715.40
  4. Step 4: Simplify right side
    110,187.40x = 11,367,911,584.38
  5. Step 5: Solve for x
    x = 11,367,911,584.38/110,187.40
  6. Step 6: Final answer
    x = 103,168.89

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1.5x scale

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.