Home / 128,750,415.11-177,680,245.26-73,756,900.43

Finding the Fourth Proportional to 128,750,415.11, 177,680,245.26 and 73,756,900.43

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Solution

The fourth proportional to 128,750,415.11, 177,680,245.26 and 73,756,900.43 is: 101,787,199.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,750,415.11 : 177,680,245.26 = 73,756,900.43 : x
  2. Step 2: Convert to fraction form
    128,750,415.11/177,680,245.26 = 73,756,900.43/x
  3. Step 3: Cross multiply
    128,750,415.11x = 177,680,245.26 × 73,756,900.43
  4. Step 4: Simplify right side
    128,750,415.11x = 13,105,144,156,762,612
  5. Step 5: Solve for x
    x = 13,105,144,156,762,612/128,750,415.11
  6. Step 6: Final answer
    x = 101,787,199.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.