Home / 121,930,839.34-168,404,209.05-80,300,999.50

Finding the Fourth Proportional to 121,930,839.34, 168,404,209.05 and 80,300,999.50

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Solution

The fourth proportional to 121,930,839.34, 168,404,209.05 and 80,300,999.50 is: 110,907,350.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,930,839.34 : 168,404,209.05 = 80,300,999.50 : x
  2. Step 2: Convert to fraction form
    121,930,839.34/168,404,209.05 = 80,300,999.50/x
  3. Step 3: Cross multiply
    121,930,839.34x = 168,404,209.05 × 80,300,999.50
  4. Step 4: Simplify right side
    121,930,839.34x = 13,523,026,306,721,946
  5. Step 5: Solve for x
    x = 13,523,026,306,721,946/121,930,839.34
  6. Step 6: Final answer
    x = 110,907,350.26

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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.