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Finding the Fourth Proportional to 109,212.66, 150,718.32 and 61,469.10

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Solution

The fourth proportional to 109,212.66, 150,718.32 and 61,469.10 is: 84,830.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,212.66 : 150,718.32 = 61,469.10 : x
  2. Step 2: Convert to fraction form
    109,212.66/150,718.32 = 61,469.10/x
  3. Step 3: Cross multiply
    109,212.66x = 150,718.32 × 61,469.10
  4. Step 4: Simplify right side
    109,212.66x = 9,264,519,483.91
  5. Step 5: Solve for x
    x = 9,264,519,483.91/109,212.66
  6. Step 6: Final answer
    x = 84,830.09

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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.