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Finding the Fourth Proportional to 137,148.56, 189,303.07 and 79,798.97

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Solution

The fourth proportional to 137,148.56, 189,303.07 and 79,798.97 is: 110,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,148.56 : 189,303.07 = 79,798.97 : x
  2. Step 2: Convert to fraction form
    137,148.56/189,303.07 = 79,798.97/x
  3. Step 3: Cross multiply
    137,148.56x = 189,303.07 × 79,798.97
  4. Step 4: Simplify right side
    137,148.56x = 15,106,188,857.83
  5. Step 5: Solve for x
    x = 15,106,188,857.83/137,148.56
  6. Step 6: Final answer
    x = 110,144.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.