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Finding the Fourth Proportional to 110,985, 153,121.86 and 63,204.54

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Solution

The fourth proportional to 110,985, 153,121.86 and 63,204.54 is: 87,200.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,985 : 153,121.86 = 63,204.54 : x
  2. Step 2: Convert to fraction form
    110,985/153,121.86 = 63,204.54/x
  3. Step 3: Cross multiply
    110,985x = 153,121.86 × 63,204.54
  4. Step 4: Simplify right side
    110,985x = 9,677,996,725.24
  5. Step 5: Solve for x
    x = 9,677,996,725.24/110,985
  6. Step 6: Final answer
    x = 87,200.94

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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.