Home / 201,440.10-278,001.81-120,865.62

Finding the Fourth Proportional to 201,440.10, 278,001.81 and 120,865.62

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Solution

The fourth proportional to 201,440.10, 278,001.81 and 120,865.62 is: 166,803.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,440.10 : 278,001.81 = 120,865.62 : x
  2. Step 2: Convert to fraction form
    201,440.10/278,001.81 = 120,865.62/x
  3. Step 3: Cross multiply
    201,440.10x = 278,001.81 × 120,865.62
  4. Step 4: Simplify right side
    201,440.10x = 33,600,861,126.77
  5. Step 5: Solve for x
    x = 33,600,861,126.77/201,440.10
  6. Step 6: Final answer
    x = 166,803.24

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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.