Home / 142,712,853.80-196,949,140.98-79,990,101.32

Finding the Fourth Proportional to 142,712,853.80, 196,949,140.98 and 79,990,101.32

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Solution

The fourth proportional to 142,712,853.80, 196,949,140.98 and 79,990,101.32 is: 110,389,368.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,712,853.80 : 196,949,140.98 = 79,990,101.32 : x
  2. Step 2: Convert to fraction form
    142,712,853.80/196,949,140.98 = 79,990,101.32/x
  3. Step 3: Cross multiply
    142,712,853.80x = 196,949,140.98 × 79,990,101.32
  4. Step 4: Simplify right side
    142,712,853.80x = 15,753,981,741,877,162
  5. Step 5: Solve for x
    x = 15,753,981,741,877,162/142,712,853.80
  6. Step 6: Final answer
    x = 110,389,368.04

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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.