Home / 374,769.90-561,960.45-137,990.70

Finding the Fourth Proportional to 374,769.90, 561,960.45 and 137,990.70

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Solution

The fourth proportional to 374,769.90, 561,960.45 and 137,990.70 is: 206,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,769.90 : 561,960.45 = 137,990.70 : x
  2. Step 2: Convert to fraction form
    374,769.90/561,960.45 = 137,990.70/x
  3. Step 3: Cross multiply
    374,769.90x = 561,960.45 × 137,990.70
  4. Step 4: Simplify right side
    374,769.90x = 77,545,315,867.82
  5. Step 5: Solve for x
    x = 77,545,315,867.82/374,769.90
  6. Step 6: Final answer
    x = 206,914.47

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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.