Home / 111,631.42-153,880.68-68,531.32

Finding the Fourth Proportional to 111,631.42, 153,880.68 and 68,531.32

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Solution

The fourth proportional to 111,631.42, 153,880.68 and 68,531.32 is: 94,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,631.42 : 153,880.68 = 68,531.32 : x
  2. Step 2: Convert to fraction form
    111,631.42/153,880.68 = 68,531.32/x
  3. Step 3: Cross multiply
    111,631.42x = 153,880.68 × 68,531.32
  4. Step 4: Simplify right side
    111,631.42x = 10,545,646,122.90
  5. Step 5: Solve for x
    x = 10,545,646,122.90/111,631.42
  6. Step 6: Final answer
    x = 94,468.44

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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.