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Finding the Fourth Proportional to 157,388.40, 236,543.40 and 137,113.20

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Solution

The fourth proportional to 157,388.40, 236,543.40 and 137,113.20 is: 206,071.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,388.40 : 236,543.40 = 137,113.20 : x
  2. Step 2: Convert to fraction form
    157,388.40/236,543.40 = 137,113.20/x
  3. Step 3: Cross multiply
    157,388.40x = 236,543.40 × 137,113.20
  4. Step 4: Simplify right side
    157,388.40x = 32,433,222,512.88
  5. Step 5: Solve for x
    x = 32,433,222,512.88/157,388.40
  6. Step 6: Final answer
    x = 206,071.24

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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.