Home / 143,602.12-198,197.50-83,172.75

Finding the Fourth Proportional to 143,602.12, 198,197.50 and 83,172.75

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Solution

The fourth proportional to 143,602.12, 198,197.50 and 83,172.75 is: 114,793.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,602.12 : 198,197.50 = 83,172.75 : x
  2. Step 2: Convert to fraction form
    143,602.12/198,197.50 = 83,172.75/x
  3. Step 3: Cross multiply
    143,602.12x = 198,197.50 × 83,172.75
  4. Step 4: Simplify right side
    143,602.12x = 16,484,631,055.77
  5. Step 5: Solve for x
    x = 16,484,631,055.77/143,602.12
  6. Step 6: Final answer
    x = 114,793.78

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1.5x scale

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.