Home / 138,429,289.80-207,643,934.70-115,922,435.40

Finding the Fourth Proportional to 138,429,289.80, 207,643,934.70 and 115,922,435.40

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Solution

The fourth proportional to 138,429,289.80, 207,643,934.70 and 115,922,435.40 is: 173,883,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,429,289.80 : 207,643,934.70 = 115,922,435.40 : x
  2. Step 2: Convert to fraction form
    138,429,289.80/207,643,934.70 = 115,922,435.40/x
  3. Step 3: Cross multiply
    138,429,289.80x = 207,643,934.70 × 115,922,435.40
  4. Step 4: Simplify right side
    138,429,289.80x = 24,070,590,606,462,568
  5. Step 5: Solve for x
    x = 24,070,590,606,462,568/138,429,289.80
  6. Step 6: Final answer
    x = 173,883,653.10

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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.