Home / 123,672,003.30-185,508,004.95-78,434,345.70

Finding the Fourth Proportional to 123,672,003.30, 185,508,004.95 and 78,434,345.70

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Solution

The fourth proportional to 123,672,003.30, 185,508,004.95 and 78,434,345.70 is: 117,651,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,672,003.30 : 185,508,004.95 = 78,434,345.70 : x
  2. Step 2: Convert to fraction form
    123,672,003.30/185,508,004.95 = 78,434,345.70/x
  3. Step 3: Cross multiply
    123,672,003.30x = 185,508,004.95 × 78,434,345.70
  4. Step 4: Simplify right side
    123,672,003.30x = 14,550,198,990,365,610
  5. Step 5: Solve for x
    x = 14,550,198,990,365,610/123,672,003.30
  6. Step 6: Final answer
    x = 117,651,518.55

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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.