Home / 121,246,705.20-181,870,057.80-72,873,764.40

Finding the Fourth Proportional to 121,246,705.20, 181,870,057.80 and 72,873,764.40

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Solution

The fourth proportional to 121,246,705.20, 181,870,057.80 and 72,873,764.40 is: 109,310,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,246,705.20 : 181,870,057.80 = 72,873,764.40 : x
  2. Step 2: Convert to fraction form
    121,246,705.20/181,870,057.80 = 72,873,764.40/x
  3. Step 3: Cross multiply
    121,246,705.20x = 181,870,057.80 × 72,873,764.40
  4. Step 4: Simplify right side
    121,246,705.20x = 13,253,555,743,531,584
  5. Step 5: Solve for x
    x = 13,253,555,743,531,584/121,246,705.20
  6. Step 6: Final answer
    x = 109,310,646.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.