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Finding the Fourth Proportional to 109,339.84, 150,888.32 and 61,608.56

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Solution

The fourth proportional to 109,339.84, 150,888.32 and 61,608.56 is: 85,019.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,339.84 : 150,888.32 = 61,608.56 : x
  2. Step 2: Convert to fraction form
    109,339.84/150,888.32 = 61,608.56/x
  3. Step 3: Cross multiply
    109,339.84x = 150,888.32 × 61,608.56
  4. Step 4: Simplify right side
    109,339.84x = 9,296,012,116.02
  5. Step 5: Solve for x
    x = 9,296,012,116.02/109,339.84
  6. Step 6: Final answer
    x = 85,019.44

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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.