Home / 143,780.34-198,416.98-83,386.02

Finding the Fourth Proportional to 143,780.34, 198,416.98 and 83,386.02

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Solution

The fourth proportional to 143,780.34, 198,416.98 and 83,386.02 is: 115,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,780.34 : 198,416.98 = 83,386.02 : x
  2. Step 2: Convert to fraction form
    143,780.34/198,416.98 = 83,386.02/x
  3. Step 3: Cross multiply
    143,780.34x = 198,416.98 × 83,386.02
  4. Step 4: Simplify right side
    143,780.34x = 16,545,202,262.62
  5. Step 5: Solve for x
    x = 16,545,202,262.62/143,780.34
  6. Step 6: Final answer
    x = 115,072.77

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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.