Home / 128,755,889.61-177,680,664.23-70,809,137.61

Finding the Fourth Proportional to 128,755,889.61, 177,680,664.23 and 70,809,137.61

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Solution

The fourth proportional to 128,755,889.61, 177,680,664.23 and 70,809,137.61 is: 97,715,255.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,755,889.61 : 177,680,664.23 = 70,809,137.61 : x
  2. Step 2: Convert to fraction form
    128,755,889.61/177,680,664.23 = 70,809,137.61/x
  3. Step 3: Cross multiply
    128,755,889.61x = 177,680,664.23 × 70,809,137.61
  4. Step 4: Simplify right side
    128,755,889.61x = 12,581,414,603,744,228
  5. Step 5: Solve for x
    x = 12,581,414,603,744,228/128,755,889.61
  6. Step 6: Final answer
    x = 97,715,255.14

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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.