Home / 208,905.87-288,291.28-122,868.48

Finding the Fourth Proportional to 208,905.87, 288,291.28 and 122,868.48

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Solution

The fourth proportional to 208,905.87, 288,291.28 and 122,868.48 is: 169,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,905.87 : 288,291.28 = 122,868.48 : x
  2. Step 2: Convert to fraction form
    208,905.87/288,291.28 = 122,868.48/x
  3. Step 3: Cross multiply
    208,905.87x = 288,291.28 × 122,868.48
  4. Step 4: Simplify right side
    208,905.87x = 35,421,911,370.85
  5. Step 5: Solve for x
    x = 35,421,911,370.85/208,905.87
  6. Step 6: Final answer
    x = 169,559.20

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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.