Home / 128,826,934.20-193,114,430.10-115,222,044.60

Finding the Fourth Proportional to 128,826,934.20, 193,114,430.10 and 115,222,044.60

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Solution

The fourth proportional to 128,826,934.20, 193,114,430.10 and 115,222,044.60 is: 172,720,399.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,826,934.20 : 193,114,430.10 = 115,222,044.60 : x
  2. Step 2: Convert to fraction form
    128,826,934.20/193,114,430.10 = 115,222,044.60/x
  3. Step 3: Cross multiply
    128,826,934.20x = 193,114,430.10 × 115,222,044.60
  4. Step 4: Simplify right side
    128,826,934.20x = 22,251,039,477,885,780
  5. Step 5: Solve for x
    x = 22,251,039,477,885,780/128,826,934.20
  6. Step 6: Final answer
    x = 172,720,399.01

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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.