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Finding the Fourth Proportional to 137,155.82, 189,313.08 and 79,806.24

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Solution

The fourth proportional to 137,155.82, 189,313.08 and 79,806.24 is: 110,154.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,155.82 : 189,313.08 = 79,806.24 : x
  2. Step 2: Convert to fraction form
    137,155.82/189,313.08 = 79,806.24/x
  3. Step 3: Cross multiply
    137,155.82x = 189,313.08 × 79,806.24
  4. Step 4: Simplify right side
    137,155.82x = 15,108,365,097.62
  5. Step 5: Solve for x
    x = 15,108,365,097.62/137,155.82
  6. Step 6: Final answer
    x = 110,154.75

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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.