Home / 139,104,171.20-208,656,256.80-87,371,998.40

Finding the Fourth Proportional to 139,104,171.20, 208,656,256.80 and 87,371,998.40

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Solution

The fourth proportional to 139,104,171.20, 208,656,256.80 and 87,371,998.40 is: 131,057,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,104,171.20 : 208,656,256.80 = 87,371,998.40 : x
  2. Step 2: Convert to fraction form
    139,104,171.20/208,656,256.80 = 87,371,998.40/x
  3. Step 3: Cross multiply
    139,104,171.20x = 208,656,256.80 × 87,371,998.40
  4. Step 4: Simplify right side
    139,104,171.20x = 18,230,714,135,279,592
  5. Step 5: Solve for x
    x = 18,230,714,135,279,592/139,104,171.20
  6. Step 6: Final answer
    x = 131,057,997.60

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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.