Home / 144,490,311.69-199,396,758.74-78,410,810.13

Finding the Fourth Proportional to 144,490,311.69, 199,396,758.74 and 78,410,810.13

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Solution

The fourth proportional to 144,490,311.69, 199,396,758.74 and 78,410,810.13 is: 108,206,987.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,490,311.69 : 199,396,758.74 = 78,410,810.13 : x
  2. Step 2: Convert to fraction form
    144,490,311.69/199,396,758.74 = 78,410,810.13/x
  3. Step 3: Cross multiply
    144,490,311.69x = 199,396,758.74 × 78,410,810.13
  4. Step 4: Simplify right side
    144,490,311.69x = 15,634,861,390,099,558
  5. Step 5: Solve for x
    x = 15,634,861,390,099,558/144,490,311.69
  6. Step 6: Final answer
    x = 108,206,987.77

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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.