Home / 144,520,575.76-199,435,892.07-78,439,655.80

Finding the Fourth Proportional to 144,520,575.76, 199,435,892.07 and 78,439,655.80

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Solution

The fourth proportional to 144,520,575.76, 199,435,892.07 and 78,439,655.80 is: 108,245,366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,520,575.76 : 199,435,892.07 = 78,439,655.80 : x
  2. Step 2: Convert to fraction form
    144,520,575.76/199,435,892.07 = 78,439,655.80/x
  3. Step 3: Cross multiply
    144,520,575.76x = 199,435,892.07 × 78,439,655.80
  4. Step 4: Simplify right side
    144,520,575.76x = 15,643,682,728,136,748
  5. Step 5: Solve for x
    x = 15,643,682,728,136,748/144,520,575.76
  6. Step 6: Final answer
    x = 108,245,366.76

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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.