Home / 190,401.20-285,565.08-140,012.72

Finding the Fourth Proportional to 190,401.20, 285,565.08 and 140,012.72

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Solution

The fourth proportional to 190,401.20, 285,565.08 and 140,012.72 is: 209,992.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,401.20 : 285,565.08 = 140,012.72 : x
  2. Step 2: Convert to fraction form
    190,401.20/285,565.08 = 140,012.72/x
  3. Step 3: Cross multiply
    190,401.20x = 285,565.08 × 140,012.72
  4. Step 4: Simplify right side
    190,401.20x = 39,982,743,587.82
  5. Step 5: Solve for x
    x = 39,982,743,587.82/190,401.20
  6. Step 6: Final answer
    x = 209,992.08

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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.