Home / 128,002,571.04-176,644,016.16-69,265,236.72

Finding the Fourth Proportional to 128,002,571.04, 176,644,016.16 and 69,265,236.72

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Solution

The fourth proportional to 128,002,571.04, 176,644,016.16 and 69,265,236.72 is: 95,586,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,002,571.04 : 176,644,016.16 = 69,265,236.72 : x
  2. Step 2: Convert to fraction form
    128,002,571.04/176,644,016.16 = 69,265,236.72/x
  3. Step 3: Cross multiply
    128,002,571.04x = 176,644,016.16 × 69,265,236.72
  4. Step 4: Simplify right side
    128,002,571.04x = 12,235,289,594,493,904
  5. Step 5: Solve for x
    x = 12,235,289,594,493,904/128,002,571.04
  6. Step 6: Final answer
    x = 95,586,279.99

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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.