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Finding the Fourth Proportional to 109,358.15, 150,909.95 and 61,621.07

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Solution

The fourth proportional to 109,358.15, 150,909.95 and 61,621.07 is: 85,034.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,358.15 : 150,909.95 = 61,621.07 : x
  2. Step 2: Convert to fraction form
    109,358.15/150,909.95 = 61,621.07/x
  3. Step 3: Cross multiply
    109,358.15x = 150,909.95 × 61,621.07
  4. Step 4: Simplify right side
    109,358.15x = 9,299,231,992.15
  5. Step 5: Solve for x
    x = 9,299,231,992.15/109,358.15
  6. Step 6: Final answer
    x = 85,034.65

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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.