Home / 209,008.95-288,432.91-122,971.17

Finding the Fourth Proportional to 209,008.95, 288,432.91 and 122,971.17

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Solution

The fourth proportional to 209,008.95, 288,432.91 and 122,971.17 is: 169,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,008.95 : 288,432.91 = 122,971.17 : x
  2. Step 2: Convert to fraction form
    209,008.95/288,432.91 = 122,971.17/x
  3. Step 3: Cross multiply
    209,008.95x = 288,432.91 × 122,971.17
  4. Step 4: Simplify right side
    209,008.95x = 35,468,933,644.54
  5. Step 5: Solve for x
    x = 35,468,933,644.54/209,008.95
  6. Step 6: Final answer
    x = 169,700.55

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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.