Home / 144,518,517.02-199,435,772.23-78,439,039.20

Finding the Fourth Proportional to 144,518,517.02, 199,435,772.23 and 78,439,039.20

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Solution

The fourth proportional to 144,518,517.02, 199,435,772.23 and 78,439,039.20 is: 108,245,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,518,517.02 : 199,435,772.23 = 78,439,039.20 : x
  2. Step 2: Convert to fraction form
    144,518,517.02/199,435,772.23 = 78,439,039.20/x
  3. Step 3: Cross multiply
    144,518,517.02x = 199,435,772.23 × 78,439,039.20
  4. Step 4: Simplify right side
    144,518,517.02x = 15,643,550,355,635,144
  5. Step 5: Solve for x
    x = 15,643,550,355,635,144/144,518,517.02
  6. Step 6: Final answer
    x = 108,245,992.82

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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.