Home / 192,435.90-288,999.45-139,904.70

Finding the Fourth Proportional to 192,435.90, 288,999.45 and 139,904.70

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Solution

The fourth proportional to 192,435.90, 288,999.45 and 139,904.70 is: 210,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,435.90 : 288,999.45 = 139,904.70 : x
  2. Step 2: Convert to fraction form
    192,435.90/288,999.45 = 139,904.70/x
  3. Step 3: Cross multiply
    192,435.90x = 288,999.45 × 139,904.70
  4. Step 4: Simplify right side
    192,435.90x = 40,432,381,352.42
  5. Step 5: Solve for x
    x = 40,432,381,352.42/192,435.90
  6. Step 6: Final answer
    x = 210,108.31

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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.