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Finding the Fourth Proportional to 109,191.69, 150,684.05 and 61,445.84

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Solution

The fourth proportional to 109,191.69, 150,684.05 and 61,445.84 is: 84,794.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,191.69 : 150,684.05 = 61,445.84 : x
  2. Step 2: Convert to fraction form
    109,191.69/150,684.05 = 61,445.84/x
  3. Step 3: Cross multiply
    109,191.69x = 150,684.05 × 61,445.84
  4. Step 4: Simplify right side
    109,191.69x = 9,258,907,427.05
  5. Step 5: Solve for x
    x = 9,258,907,427.05/109,191.69
  6. Step 6: Final answer
    x = 84,794.98

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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.