Home / 239,142.72-330,007.14-137,097.30

Finding the Fourth Proportional to 239,142.72, 330,007.14 and 137,097.30

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Solution

The fourth proportional to 239,142.72, 330,007.14 and 137,097.30 is: 189,188.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,142.72 : 330,007.14 = 137,097.30 : x
  2. Step 2: Convert to fraction form
    239,142.72/330,007.14 = 137,097.30/x
  3. Step 3: Cross multiply
    239,142.72x = 330,007.14 × 137,097.30
  4. Step 4: Simplify right side
    239,142.72x = 45,243,087,874.72
  5. Step 5: Solve for x
    x = 45,243,087,874.72/239,142.72
  6. Step 6: Final answer
    x = 189,188.65

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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.