Home / 128,178,606.20-192,267,911.74-31,133,659.92

Finding the Fourth Proportional to 128,178,606.20, 192,267,911.74 and 31,133,659.92

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Solution

The fourth proportional to 128,178,606.20, 192,267,911.74 and 31,133,659.92 is: 46,700,490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,178,606.20 : 192,267,911.74 = 31,133,659.92 : x
  2. Step 2: Convert to fraction form
    128,178,606.20/192,267,911.74 = 31,133,659.92/x
  3. Step 3: Cross multiply
    128,178,606.20x = 192,267,911.74 × 31,133,659.92
  4. Step 4: Simplify right side
    128,178,606.20x = 5,986,003,777,641,736
  5. Step 5: Solve for x
    x = 5,986,003,777,641,736/128,178,606.20
  6. Step 6: Final answer
    x = 46,700,490.47

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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.