Home / 201,941.20-278,666.28-111,292.12

Finding the Fourth Proportional to 201,941.20, 278,666.28 and 111,292.12

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Solution

The fourth proportional to 201,941.20, 278,666.28 and 111,292.12 is: 153,576.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,941.20 : 278,666.28 = 111,292.12 : x
  2. Step 2: Convert to fraction form
    201,941.20/278,666.28 = 111,292.12/x
  3. Step 3: Cross multiply
    201,941.20x = 278,666.28 × 111,292.12
  4. Step 4: Simplify right side
    201,941.20x = 31,013,361,073.71
  5. Step 5: Solve for x
    x = 31,013,361,073.71/201,941.20
  6. Step 6: Final answer
    x = 153,576.19

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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.