Home / 128,692,890.09-192,976,562.75-45,666,529.70

Finding the Fourth Proportional to 128,692,890.09, 192,976,562.75 and 45,666,529.70

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Solution

The fourth proportional to 128,692,890.09, 192,976,562.75 and 45,666,529.70 is: 68,477,519.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,692,890.09 : 192,976,562.75 = 45,666,529.70 : x
  2. Step 2: Convert to fraction form
    128,692,890.09/192,976,562.75 = 45,666,529.70/x
  3. Step 3: Cross multiply
    128,692,890.09x = 192,976,562.75 × 45,666,529.70
  4. Step 4: Simplify right side
    128,692,890.09x = 8,812,569,933,033,573
  5. Step 5: Solve for x
    x = 8,812,569,933,033,573/128,692,890.09
  6. Step 6: Final answer
    x = 68,477,519.83

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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.