Home / 111,038.20-166,557.30-66,801.40

Finding the Fourth Proportional to 111,038.20, 166,557.30 and 66,801.40

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Solution

The fourth proportional to 111,038.20, 166,557.30 and 66,801.40 is: 100,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,038.20 : 166,557.30 = 66,801.40 : x
  2. Step 2: Convert to fraction form
    111,038.20/166,557.30 = 66,801.40/x
  3. Step 3: Cross multiply
    111,038.20x = 166,557.30 × 66,801.40
  4. Step 4: Simplify right side
    111,038.20x = 11,126,260,820.22
  5. Step 5: Solve for x
    x = 11,126,260,820.22/111,038.20
  6. Step 6: Final answer
    x = 100,202.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.