Home / 139,056,363.20-208,584,544.80-81,576,171.20

Finding the Fourth Proportional to 139,056,363.20, 208,584,544.80 and 81,576,171.20

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Solution

The fourth proportional to 139,056,363.20, 208,584,544.80 and 81,576,171.20 is: 122,364,256.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,056,363.20 : 208,584,544.80 = 81,576,171.20 : x
  2. Step 2: Convert to fraction form
    139,056,363.20/208,584,544.80 = 81,576,171.20/x
  3. Step 3: Cross multiply
    139,056,363.20x = 208,584,544.80 × 81,576,171.20
  4. Step 4: Simplify right side
    139,056,363.20x = 17,015,528,536,278,872
  5. Step 5: Solve for x
    x = 17,015,528,536,278,872/139,056,363.20
  6. Step 6: Final answer
    x = 122,364,256.80

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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.