Home / 143,945.40-198,737.10-90,303.96

Finding the Fourth Proportional to 143,945.40, 198,737.10 and 90,303.96

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Solution

The fourth proportional to 143,945.40, 198,737.10 and 90,303.96 is: 124,677.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,945.40 : 198,737.10 = 90,303.96 : x
  2. Step 2: Convert to fraction form
    143,945.40/198,737.10 = 90,303.96/x
  3. Step 3: Cross multiply
    143,945.40x = 198,737.10 × 90,303.96
  4. Step 4: Simplify right side
    143,945.40x = 17,946,747,128.92
  5. Step 5: Solve for x
    x = 17,946,747,128.92/143,945.40
  6. Step 6: Final answer
    x = 124,677.46

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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.