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Finding the Fourth Proportional to 154,988.88, 213,829.64 and 101,304.90

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Solution

The fourth proportional to 154,988.88, 213,829.64 and 101,304.90 is: 139,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,988.88 : 213,829.64 = 101,304.90 : x
  2. Step 2: Convert to fraction form
    154,988.88/213,829.64 = 101,304.90/x
  3. Step 3: Cross multiply
    154,988.88x = 213,829.64 × 101,304.90
  4. Step 4: Simplify right side
    154,988.88x = 21,661,990,297.24
  5. Step 5: Solve for x
    x = 21,661,990,297.24/154,988.88
  6. Step 6: Final answer
    x = 139,764.80

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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.