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Finding the Fourth Proportional to 109,347.74, 150,911.03 and 66,934.30

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Solution

The fourth proportional to 109,347.74, 150,911.03 and 66,934.30 is: 92,376.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,347.74 : 150,911.03 = 66,934.30 : x
  2. Step 2: Convert to fraction form
    109,347.74/150,911.03 = 66,934.30/x
  3. Step 3: Cross multiply
    109,347.74x = 150,911.03 × 66,934.30
  4. Step 4: Simplify right side
    109,347.74x = 10,101,124,155.33
  5. Step 5: Solve for x
    x = 10,101,124,155.33/109,347.74
  6. Step 6: Final answer
    x = 92,376.16

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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.