Home / 140,679,964.70-211,019,947.05-128,138,831.90

Finding the Fourth Proportional to 140,679,964.70, 211,019,947.05 and 128,138,831.90

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Solution

The fourth proportional to 140,679,964.70, 211,019,947.05 and 128,138,831.90 is: 192,208,247.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,679,964.70 : 211,019,947.05 = 128,138,831.90 : x
  2. Step 2: Convert to fraction form
    140,679,964.70/211,019,947.05 = 128,138,831.90/x
  3. Step 3: Cross multiply
    140,679,964.70x = 211,019,947.05 × 128,138,831.90
  4. Step 4: Simplify right side
    140,679,964.70x = 27,039,849,522,586,852
  5. Step 5: Solve for x
    x = 27,039,849,522,586,852/140,679,964.70
  6. Step 6: Final answer
    x = 192,208,247.85

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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.