Home / 138,056.28-207,089.01-38,208.12

Finding the Fourth Proportional to 138,056.28, 207,089.01 and 38,208.12

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Solution

The fourth proportional to 138,056.28, 207,089.01 and 38,208.12 is: 57,313.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,056.28 : 207,089.01 = 38,208.12 : x
  2. Step 2: Convert to fraction form
    138,056.28/207,089.01 = 38,208.12/x
  3. Step 3: Cross multiply
    138,056.28x = 207,089.01 × 38,208.12
  4. Step 4: Simplify right side
    138,056.28x = 7,912,481,744.76
  5. Step 5: Solve for x
    x = 7,912,481,744.76/138,056.28
  6. Step 6: Final answer
    x = 57,313.45

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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.