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Finding the Fourth Proportional to 140,686.80, 211,127.40 and 101,277.60

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Solution

The fourth proportional to 140,686.80, 211,127.40 and 101,277.60 is: 151,986.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,686.80 : 211,127.40 = 101,277.60 : x
  2. Step 2: Convert to fraction form
    140,686.80/211,127.40 = 101,277.60/x
  3. Step 3: Cross multiply
    140,686.80x = 211,127.40 × 101,277.60
  4. Step 4: Simplify right side
    140,686.80x = 21,382,476,366.24
  5. Step 5: Solve for x
    x = 21,382,476,366.24/140,686.80
  6. Step 6: Final answer
    x = 151,986.37

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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.