Home / 121,246,759.20-181,870,138.80-72,873,818.40

Finding the Fourth Proportional to 121,246,759.20, 181,870,138.80 and 72,873,818.40

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Solution

The fourth proportional to 121,246,759.20, 181,870,138.80 and 72,873,818.40 is: 109,310,727.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,246,759.20 : 181,870,138.80 = 72,873,818.40 : x
  2. Step 2: Convert to fraction form
    121,246,759.20/181,870,138.80 = 72,873,818.40/x
  3. Step 3: Cross multiply
    121,246,759.20x = 181,870,138.80 × 72,873,818.40
  4. Step 4: Simplify right side
    121,246,759.20x = 13,253,571,467,293,996
  5. Step 5: Solve for x
    x = 13,253,571,467,293,996/121,246,759.20
  6. Step 6: Final answer
    x = 109,310,727.60

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1.5x scale

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.