Home / 102,821.06-141,851.30-66,998

Finding the Fourth Proportional to 102,821.06, 141,851.30 and 66,998

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Solution

The fourth proportional to 102,821.06, 141,851.30 and 66,998 is: 92,430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,821.06 : 141,851.30 = 66,998 : x
  2. Step 2: Convert to fraction form
    102,821.06/141,851.30 = 66,998/x
  3. Step 3: Cross multiply
    102,821.06x = 141,851.30 × 66,998
  4. Step 4: Simplify right side
    102,821.06x = 9,503,753,397.40
  5. Step 5: Solve for x
    x = 9,503,753,397.40/102,821.06
  6. Step 6: Final answer
    x = 92,430.03

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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.