Home / 142,712,852.80-196,949,139.60-79,990,100.32

Finding the Fourth Proportional to 142,712,852.80, 196,949,139.60 and 79,990,100.32

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Solution

The fourth proportional to 142,712,852.80, 196,949,139.60 and 79,990,100.32 is: 110,389,366.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,712,852.80 : 196,949,139.60 = 79,990,100.32 : x
  2. Step 2: Convert to fraction form
    142,712,852.80/196,949,139.60 = 79,990,100.32/x
  3. Step 3: Cross multiply
    142,712,852.80x = 196,949,139.60 × 79,990,100.32
  4. Step 4: Simplify right side
    142,712,852.80x = 15,753,981,434,541,682
  5. Step 5: Solve for x
    x = 15,753,981,434,541,682/142,712,852.80
  6. Step 6: Final answer
    x = 110,389,366.66

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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.