Home / 157,467.20-236,129.72-45,121.72

Finding the Fourth Proportional to 157,467.20, 236,129.72 and 45,121.72

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Solution

The fourth proportional to 157,467.20, 236,129.72 and 45,121.72 is: 67,662.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,467.20 : 236,129.72 = 45,121.72 : x
  2. Step 2: Convert to fraction form
    157,467.20/236,129.72 = 45,121.72/x
  3. Step 3: Cross multiply
    157,467.20x = 236,129.72 × 45,121.72
  4. Step 4: Simplify right side
    157,467.20x = 10,654,579,109.52
  5. Step 5: Solve for x
    x = 10,654,579,109.52/157,467.20
  6. Step 6: Final answer
    x = 67,662.21

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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.