Home / 203,267.76-280,500.06-111,386.50

Finding the Fourth Proportional to 203,267.76, 280,500.06 and 111,386.50

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Solution

The fourth proportional to 203,267.76, 280,500.06 and 111,386.50 is: 153,708.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,267.76 : 280,500.06 = 111,386.50 : x
  2. Step 2: Convert to fraction form
    203,267.76/280,500.06 = 111,386.50/x
  3. Step 3: Cross multiply
    203,267.76x = 280,500.06 × 111,386.50
  4. Step 4: Simplify right side
    203,267.76x = 31,243,919,933.19
  5. Step 5: Solve for x
    x = 31,243,919,933.19/203,267.76
  6. Step 6: Final answer
    x = 153,708.19

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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.