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Finding the Fourth Proportional to 111,750.72, 154,110.12 and 71,477.04

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Solution

The fourth proportional to 111,750.72, 154,110.12 and 71,477.04 is: 98,570.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,750.72 : 154,110.12 = 71,477.04 : x
  2. Step 2: Convert to fraction form
    111,750.72/154,110.12 = 71,477.04/x
  3. Step 3: Cross multiply
    111,750.72x = 154,110.12 × 71,477.04
  4. Step 4: Simplify right side
    111,750.72x = 11,015,335,211.64
  5. Step 5: Solve for x
    x = 11,015,335,211.64/111,750.72
  6. Step 6: Final answer
    x = 98,570.60

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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.