Home / 156,699.40-234,951.90-90,106.60

Finding the Fourth Proportional to 156,699.40, 234,951.90 and 90,106.60

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Solution

The fourth proportional to 156,699.40, 234,951.90 and 90,106.60 is: 135,104.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,699.40 : 234,951.90 = 90,106.60 : x
  2. Step 2: Convert to fraction form
    156,699.40/234,951.90 = 90,106.60/x
  3. Step 3: Cross multiply
    156,699.40x = 234,951.90 × 90,106.60
  4. Step 4: Simplify right side
    156,699.40x = 21,170,716,872.54
  5. Step 5: Solve for x
    x = 21,170,716,872.54/156,699.40
  6. Step 6: Final answer
    x = 135,104.01

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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.