Home / 103,417.20-155,139.03-36,864.05

Finding the Fourth Proportional to 103,417.20, 155,139.03 and 36,864.05

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Solution

The fourth proportional to 103,417.20, 155,139.03 and 36,864.05 is: 55,300.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,417.20 : 155,139.03 = 36,864.05 : x
  2. Step 2: Convert to fraction form
    103,417.20/155,139.03 = 36,864.05/x
  3. Step 3: Cross multiply
    103,417.20x = 155,139.03 × 36,864.05
  4. Step 4: Simplify right side
    103,417.20x = 5,719,052,958.87
  5. Step 5: Solve for x
    x = 5,719,052,958.87/103,417.20
  6. Step 6: Final answer
    x = 55,300.79

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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.