Home / 128,301.57-191,099.45-122,544.90

Finding the Fourth Proportional to 128,301.57, 191,099.45 and 122,544.90

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Solution

The fourth proportional to 128,301.57, 191,099.45 and 122,544.90 is: 182,525.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,301.57 : 191,099.45 = 122,544.90 : x
  2. Step 2: Convert to fraction form
    128,301.57/191,099.45 = 122,544.90/x
  3. Step 3: Cross multiply
    128,301.57x = 191,099.45 × 122,544.90
  4. Step 4: Simplify right side
    128,301.57x = 23,418,263,296.67
  5. Step 5: Solve for x
    x = 23,418,263,296.67/128,301.57
  6. Step 6: Final answer
    x = 182,525.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.