Home / 128,641,126.89-177,524,620.06-69,903,652.28

Finding the Fourth Proportional to 128,641,126.89, 177,524,620.06 and 69,903,652.28

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Solution

The fourth proportional to 128,641,126.89, 177,524,620.06 and 69,903,652.28 is: 96,466,966.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,641,126.89 : 177,524,620.06 = 69,903,652.28 : x
  2. Step 2: Convert to fraction form
    128,641,126.89/177,524,620.06 = 69,903,652.28/x
  3. Step 3: Cross multiply
    128,641,126.89x = 177,524,620.06 × 69,903,652.28
  4. Step 4: Simplify right side
    128,641,126.89x = 12,409,619,311,463,836
  5. Step 5: Solve for x
    x = 12,409,619,311,463,836/128,641,126.89
  6. Step 6: Final answer
    x = 96,466,966.76

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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.