Home / 142,738,521.76-196,988,906.51-80,859,368.80

Finding the Fourth Proportional to 142,738,521.76, 196,988,906.51 and 80,859,368.80

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Solution

The fourth proportional to 142,738,521.76, 196,988,906.51 and 80,859,368.80 is: 111,591,450.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,738,521.76 : 196,988,906.51 = 80,859,368.80 : x
  2. Step 2: Convert to fraction form
    142,738,521.76/196,988,906.51 = 80,859,368.80/x
  3. Step 3: Cross multiply
    142,738,521.76x = 196,988,906.51 × 80,859,368.80
  4. Step 4: Simplify right side
    142,738,521.76x = 15,928,398,641,000,810
  5. Step 5: Solve for x
    x = 15,928,398,641,000,810/142,738,521.76
  6. Step 6: Final answer
    x = 111,591,450.19

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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.