Home / 190,101.50-285,521.31-139,983.66

Finding the Fourth Proportional to 190,101.50, 285,521.31 and 139,983.66

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Solution

The fourth proportional to 190,101.50, 285,521.31 and 139,983.66 is: 210,247.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,101.50 : 285,521.31 = 139,983.66 : x
  2. Step 2: Convert to fraction form
    190,101.50/285,521.31 = 139,983.66/x
  3. Step 3: Cross multiply
    190,101.50x = 285,521.31 × 139,983.66
  4. Step 4: Simplify right side
    190,101.50x = 39,968,317,981.79
  5. Step 5: Solve for x
    x = 39,968,317,981.79/190,101.50
  6. Step 6: Final answer
    x = 210,247.25

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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.