Home / 138,429,260.80-207,643,891.20-115,922,406.40

Finding the Fourth Proportional to 138,429,260.80, 207,643,891.20 and 115,922,406.40

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Solution

The fourth proportional to 138,429,260.80, 207,643,891.20 and 115,922,406.40 is: 173,883,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,429,260.80 : 207,643,891.20 = 115,922,406.40 : x
  2. Step 2: Convert to fraction form
    138,429,260.80/207,643,891.20 = 115,922,406.40/x
  3. Step 3: Cross multiply
    138,429,260.80x = 207,643,891.20 × 115,922,406.40
  4. Step 4: Simplify right side
    138,429,260.80x = 24,070,579,542,163,784
  5. Step 5: Solve for x
    x = 24,070,579,542,163,784/138,429,260.80
  6. Step 6: Final answer
    x = 173,883,609.60

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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.