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Finding the Fourth Proportional to 111,630.40, 154,050.96 and 61,329.44

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Solution

The fourth proportional to 111,630.40, 154,050.96 and 61,329.44 is: 84,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,630.40 : 154,050.96 = 61,329.44 : x
  2. Step 2: Convert to fraction form
    111,630.40/154,050.96 = 61,329.44/x
  3. Step 3: Cross multiply
    111,630.40x = 154,050.96 × 61,329.44
  4. Step 4: Simplify right side
    111,630.40x = 9,447,859,108.26
  5. Step 5: Solve for x
    x = 9,447,859,108.26/111,630.40
  6. Step 6: Final answer
    x = 84,635.18

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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.