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Finding the Fourth Proportional to 138,804.80, 208,176 and 63,852.98

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Solution

The fourth proportional to 138,804.80, 208,176 and 63,852.98 is: 95,765.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,804.80 : 208,176 = 63,852.98 : x
  2. Step 2: Convert to fraction form
    138,804.80/208,176 = 63,852.98/x
  3. Step 3: Cross multiply
    138,804.80x = 208,176 × 63,852.98
  4. Step 4: Simplify right side
    138,804.80x = 13,292,657,964.48
  5. Step 5: Solve for x
    x = 13,292,657,964.48/138,804.80
  6. Step 6: Final answer
    x = 95,765.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.