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Finding the Fourth Proportional to 111,973.15, 154,522.95 and 61,672.15

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Solution

The fourth proportional to 111,973.15, 154,522.95 and 61,672.15 is: 85,107.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,973.15 : 154,522.95 = 61,672.15 : x
  2. Step 2: Convert to fraction form
    111,973.15/154,522.95 = 61,672.15/x
  3. Step 3: Cross multiply
    111,973.15x = 154,522.95 × 61,672.15
  4. Step 4: Simplify right side
    111,973.15x = 9,529,762,512.73
  5. Step 5: Solve for x
    x = 9,529,762,512.73/111,973.15
  6. Step 6: Final answer
    x = 85,107.57

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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.