Home / 156,971.40-235,197.90-133,643.40

Finding the Fourth Proportional to 156,971.40, 235,197.90 and 133,643.40

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Solution

The fourth proportional to 156,971.40, 235,197.90 and 133,643.40 is: 200,244.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.40 : 235,197.90 = 133,643.40 : x
  2. Step 2: Convert to fraction form
    156,971.40/235,197.90 = 133,643.40/x
  3. Step 3: Cross multiply
    156,971.40x = 235,197.90 × 133,643.40
  4. Step 4: Simplify right side
    156,971.40x = 31,432,647,028.86
  5. Step 5: Solve for x
    x = 31,432,647,028.86/156,971.40
  6. Step 6: Final answer
    x = 200,244.42

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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.