Home / 128,322,998.10-192,531,736.35-42,064,218.90

Finding the Fourth Proportional to 128,322,998.10, 192,531,736.35 and 42,064,218.90

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Solution

The fourth proportional to 128,322,998.10, 192,531,736.35 and 42,064,218.90 is: 63,111,813.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,322,998.10 : 192,531,736.35 = 42,064,218.90 : x
  2. Step 2: Convert to fraction form
    128,322,998.10/192,531,736.35 = 42,064,218.90/x
  3. Step 3: Cross multiply
    128,322,998.10x = 192,531,736.35 × 42,064,218.90
  4. Step 4: Simplify right side
    128,322,998.10x = 8,098,697,103,023,486
  5. Step 5: Solve for x
    x = 8,098,697,103,023,486/128,322,998.10
  6. Step 6: Final answer
    x = 63,111,813.34

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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.