Home / 143,977.50-198,688.95-80,315.30

Finding the Fourth Proportional to 143,977.50, 198,688.95 and 80,315.30

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Solution

The fourth proportional to 143,977.50, 198,688.95 and 80,315.30 is: 110,835.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,977.50 : 198,688.95 = 80,315.30 : x
  2. Step 2: Convert to fraction form
    143,977.50/198,688.95 = 80,315.30/x
  3. Step 3: Cross multiply
    143,977.50x = 198,688.95 × 80,315.30
  4. Step 4: Simplify right side
    143,977.50x = 15,957,762,005.03
  5. Step 5: Solve for x
    x = 15,957,762,005.03/143,977.50
  6. Step 6: Final answer
    x = 110,835.11

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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.