Home / 156,938.20-235,407.30-145,418.20

Finding the Fourth Proportional to 156,938.20, 235,407.30 and 145,418.20

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Solution

The fourth proportional to 156,938.20, 235,407.30 and 145,418.20 is: 218,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.20 : 235,407.30 = 145,418.20 : x
  2. Step 2: Convert to fraction form
    156,938.20/235,407.30 = 145,418.20/x
  3. Step 3: Cross multiply
    156,938.20x = 235,407.30 × 145,418.20
  4. Step 4: Simplify right side
    156,938.20x = 34,232,505,832.86
  5. Step 5: Solve for x
    x = 34,232,505,832.86/156,938.20
  6. Step 6: Final answer
    x = 218,127.30

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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.