Home / 127,400.39-191,121.32-47,438.66

Finding the Fourth Proportional to 127,400.39, 191,121.32 and 47,438.66

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Solution

The fourth proportional to 127,400.39, 191,121.32 and 47,438.66 is: 71,165.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,400.39 : 191,121.32 = 47,438.66 : x
  2. Step 2: Convert to fraction form
    127,400.39/191,121.32 = 47,438.66/x
  3. Step 3: Cross multiply
    127,400.39x = 191,121.32 × 47,438.66
  4. Step 4: Simplify right side
    127,400.39x = 9,066,539,914.63
  5. Step 5: Solve for x
    x = 9,066,539,914.63/127,400.39
  6. Step 6: Final answer
    x = 71,165.71

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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.