Home / 129,103,106.20-193,528,688.10-115,498,216.60

Finding the Fourth Proportional to 129,103,106.20, 193,528,688.10 and 115,498,216.60

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Solution

The fourth proportional to 129,103,106.20, 193,528,688.10 and 115,498,216.60 is: 173,134,628.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,103,106.20 : 193,528,688.10 = 115,498,216.60 : x
  2. Step 2: Convert to fraction form
    129,103,106.20/193,528,688.10 = 115,498,216.60/x
  3. Step 3: Cross multiply
    129,103,106.20x = 193,528,688.10 × 115,498,216.60
  4. Step 4: Simplify right side
    129,103,106.20x = 22,352,218,336,487,640
  5. Step 5: Solve for x
    x = 22,352,218,336,487,640/129,103,106.20
  6. Step 6: Final answer
    x = 173,134,628.55

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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.