Home / 128,115,919.20-192,155,216.40-37,230,031.20

Finding the Fourth Proportional to 128,115,919.20, 192,155,216.40 and 37,230,031.20

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Solution

The fourth proportional to 128,115,919.20, 192,155,216.40 and 37,230,031.20 is: 55,839,623.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115,919.20 : 192,155,216.40 = 37,230,031.20 : x
  2. Step 2: Convert to fraction form
    128,115,919.20/192,155,216.40 = 37,230,031.20/x
  3. Step 3: Cross multiply
    128,115,919.20x = 192,155,216.40 × 37,230,031.20
  4. Step 4: Simplify right side
    128,115,919.20x = 7,153,944,701,814,752
  5. Step 5: Solve for x
    x = 7,153,944,701,814,752/128,115,919.20
  6. Step 6: Final answer
    x = 55,839,623.57

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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.