Home / 156,622.80-234,934.20-77,890.80

Finding the Fourth Proportional to 156,622.80, 234,934.20 and 77,890.80

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Solution

The fourth proportional to 156,622.80, 234,934.20 and 77,890.80 is: 116,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,622.80 : 234,934.20 = 77,890.80 : x
  2. Step 2: Convert to fraction form
    156,622.80/234,934.20 = 77,890.80/x
  3. Step 3: Cross multiply
    156,622.80x = 234,934.20 × 77,890.80
  4. Step 4: Simplify right side
    156,622.80x = 18,299,212,785.36
  5. Step 5: Solve for x
    x = 18,299,212,785.36/156,622.80
  6. Step 6: Final answer
    x = 116,836.20

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1.5x scale

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.