Home / 156,741.40-235,112.10-133,121.80

Finding the Fourth Proportional to 156,741.40, 235,112.10 and 133,121.80

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Solution

The fourth proportional to 156,741.40, 235,112.10 and 133,121.80 is: 199,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,741.40 : 235,112.10 = 133,121.80 : x
  2. Step 2: Convert to fraction form
    156,741.40/235,112.10 = 133,121.80/x
  3. Step 3: Cross multiply
    156,741.40x = 235,112.10 × 133,121.80
  4. Step 4: Simplify right side
    156,741.40x = 31,298,545,953.78
  5. Step 5: Solve for x
    x = 31,298,545,953.78/156,741.40
  6. Step 6: Final answer
    x = 199,682.70

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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.