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Finding the Fourth Proportional to 111,573.48, 153,964.08 and 66,249.12

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Solution

The fourth proportional to 111,573.48, 153,964.08 and 66,249.12 is: 91,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,573.48 : 153,964.08 = 66,249.12 : x
  2. Step 2: Convert to fraction form
    111,573.48/153,964.08 = 66,249.12/x
  3. Step 3: Cross multiply
    111,573.48x = 153,964.08 × 66,249.12
  4. Step 4: Simplify right side
    111,573.48x = 10,199,984,811.61
  5. Step 5: Solve for x
    x = 10,199,984,811.61/111,573.48
  6. Step 6: Final answer
    x = 91,419.44

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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.