Home / 137,147.81-189,302.03-79,798.22

Finding the Fourth Proportional to 137,147.81, 189,302.03 and 79,798.22

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Solution

The fourth proportional to 137,147.81, 189,302.03 and 79,798.22 is: 110,143.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,147.81 : 189,302.03 = 79,798.22 : x
  2. Step 2: Convert to fraction form
    137,147.81/189,302.03 = 79,798.22/x
  3. Step 3: Cross multiply
    137,147.81x = 189,302.03 × 79,798.22
  4. Step 4: Simplify right side
    137,147.81x = 15,105,964,289.37
  5. Step 5: Solve for x
    x = 15,105,964,289.37/137,147.81
  6. Step 6: Final answer
    x = 110,143.68

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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.