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Finding the Fourth Proportional to 208,870.11, 288,139.14 and 123,927.03

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Solution

The fourth proportional to 208,870.11, 288,139.14 and 123,927.03 is: 170,959.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,870.11 : 288,139.14 = 123,927.03 : x
  2. Step 2: Convert to fraction form
    208,870.11/288,139.14 = 123,927.03/x
  3. Step 3: Cross multiply
    208,870.11x = 288,139.14 × 123,927.03
  4. Step 4: Simplify right side
    208,870.11x = 35,708,227,846.95
  5. Step 5: Solve for x
    x = 35,708,227,846.95/208,870.11
  6. Step 6: Final answer
    x = 170,959.01

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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.