Home / 12,128,107.20-18,192,160.80-9,975,771.15

Finding the Fourth Proportional to 12,128,107.20, 18,192,160.80 and 9,975,771.15

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Solution

The fourth proportional to 12,128,107.20, 18,192,160.80 and 9,975,771.15 is: 14,963,656.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,107.20 : 18,192,160.80 = 9,975,771.15 : x
  2. Step 2: Convert to fraction form
    12,128,107.20/18,192,160.80 = 9,975,771.15/x
  3. Step 3: Cross multiply
    12,128,107.20x = 18,192,160.80 × 9,975,771.15
  4. Step 4: Simplify right side
    12,128,107.20x = 181,480,832,864,800.94
  5. Step 5: Solve for x
    x = 181,480,832,864,800.94/12,128,107.20
  6. Step 6: Final answer
    x = 14,963,656.73

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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.