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Finding the Fourth Proportional to 134,779.70, 202,141.20 and 68,157.20

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Solution

The fourth proportional to 134,779.70, 202,141.20 and 68,157.20 is: 102,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,779.70 : 202,141.20 = 68,157.20 : x
  2. Step 2: Convert to fraction form
    134,779.70/202,141.20 = 68,157.20/x
  3. Step 3: Cross multiply
    134,779.70x = 202,141.20 × 68,157.20
  4. Step 4: Simplify right side
    134,779.70x = 13,777,378,196.64
  5. Step 5: Solve for x
    x = 13,777,378,196.64/134,779.70
  6. Step 6: Final answer
    x = 102,221.46

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1.5x scale

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.