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Finding the Fourth Proportional to 109,689.75, 151,371.99 and 59,388.75

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Solution

The fourth proportional to 109,689.75, 151,371.99 and 59,388.75 is: 81,956.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,689.75 : 151,371.99 = 59,388.75 : x
  2. Step 2: Convert to fraction form
    109,689.75/151,371.99 = 59,388.75/x
  3. Step 3: Cross multiply
    109,689.75x = 151,371.99 × 59,388.75
  4. Step 4: Simplify right side
    109,689.75x = 8,989,793,271.11
  5. Step 5: Solve for x
    x = 8,989,793,271.11/109,689.75
  6. Step 6: Final answer
    x = 81,956.55

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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.