Home / 209,890.58-289,656.79-119,261.90

Finding the Fourth Proportional to 209,890.58, 289,656.79 and 119,261.90

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Solution

The fourth proportional to 209,890.58, 289,656.79 and 119,261.90 is: 164,585.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,890.58 : 289,656.79 = 119,261.90 : x
  2. Step 2: Convert to fraction form
    209,890.58/289,656.79 = 119,261.90/x
  3. Step 3: Cross multiply
    209,890.58x = 289,656.79 × 119,261.90
  4. Step 4: Simplify right side
    209,890.58x = 34,545,019,549.29
  5. Step 5: Solve for x
    x = 34,545,019,549.29/209,890.58
  6. Step 6: Final answer
    x = 164,585.85

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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.