Home / 139,022,148.32-208,552,161.20-80,757,167.84

Finding the Fourth Proportional to 139,022,148.32, 208,552,161.20 and 80,757,167.84

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Solution

The fourth proportional to 139,022,148.32, 208,552,161.20 and 80,757,167.84 is: 121,146,753.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,022,148.32 : 208,552,161.20 = 80,757,167.84 : x
  2. Step 2: Convert to fraction form
    139,022,148.32/208,552,161.20 = 80,757,167.84/x
  3. Step 3: Cross multiply
    139,022,148.32x = 208,552,161.20 × 80,757,167.84
  4. Step 4: Simplify right side
    139,022,148.32x = 16,842,081,885,423,136
  5. Step 5: Solve for x
    x = 16,842,081,885,423,136/139,022,148.32
  6. Step 6: Final answer
    x = 121,146,753.15

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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.