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Finding the Fourth Proportional to 153,793.69, 212,102.76 and 100,059.10

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Solution

The fourth proportional to 153,793.69, 212,102.76 and 100,059.10 is: 137,995.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,793.69 : 212,102.76 = 100,059.10 : x
  2. Step 2: Convert to fraction form
    153,793.69/212,102.76 = 100,059.10/x
  3. Step 3: Cross multiply
    153,793.69x = 212,102.76 × 100,059.10
  4. Step 4: Simplify right side
    153,793.69x = 21,222,811,273.12
  5. Step 5: Solve for x
    x = 21,222,811,273.12/153,793.69
  6. Step 6: Final answer
    x = 137,995.33

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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.