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Finding the Fourth Proportional to 127,662.64, 191,438.55 and 43,400.20

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Solution

The fourth proportional to 127,662.64, 191,438.55 and 43,400.20 is: 65,081.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,662.64 : 191,438.55 = 43,400.20 : x
  2. Step 2: Convert to fraction form
    127,662.64/191,438.55 = 43,400.20/x
  3. Step 3: Cross multiply
    127,662.64x = 191,438.55 × 43,400.20
  4. Step 4: Simplify right side
    127,662.64x = 8,308,471,357.71
  5. Step 5: Solve for x
    x = 8,308,471,357.71/127,662.64
  6. Step 6: Final answer
    x = 65,081.46

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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.