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Finding the Fourth Proportional to 135,467.20, 202,909.20 and 112,139.20

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Solution

The fourth proportional to 135,467.20, 202,909.20 and 112,139.20 is: 167,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,467.20 : 202,909.20 = 112,139.20 : x
  2. Step 2: Convert to fraction form
    135,467.20/202,909.20 = 112,139.20/x
  3. Step 3: Cross multiply
    135,467.20x = 202,909.20 × 112,139.20
  4. Step 4: Simplify right side
    135,467.20x = 22,754,075,360.64
  5. Step 5: Solve for x
    x = 22,754,075,360.64/135,467.20
  6. Step 6: Final answer
    x = 167,967.41

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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.