Home / 209,516.25-289,126.88-114,020.90

Finding the Fourth Proportional to 209,516.25, 289,126.88 and 114,020.90

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Solution

The fourth proportional to 209,516.25, 289,126.88 and 114,020.90 is: 157,345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,516.25 : 289,126.88 = 114,020.90 : x
  2. Step 2: Convert to fraction form
    209,516.25/289,126.88 = 114,020.90/x
  3. Step 3: Cross multiply
    209,516.25x = 289,126.88 × 114,020.90
  4. Step 4: Simplify right side
    209,516.25x = 32,966,507,071.79
  5. Step 5: Solve for x
    x = 32,966,507,071.79/209,516.25
  6. Step 6: Final answer
    x = 157,345.82

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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.