Home / 128,809,630.80-193,320,199.80-127,801,861.20

Finding the Fourth Proportional to 128,809,630.80, 193,320,199.80 and 127,801,861.20

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Solution

The fourth proportional to 128,809,630.80, 193,320,199.80 and 127,801,861.20 is: 191,807,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,809,630.80 : 193,320,199.80 = 127,801,861.20 : x
  2. Step 2: Convert to fraction form
    128,809,630.80/193,320,199.80 = 127,801,861.20/x
  3. Step 3: Cross multiply
    128,809,630.80x = 193,320,199.80 × 127,801,861.20
  4. Step 4: Simplify right side
    128,809,630.80x = 24,706,681,341,995,868
  5. Step 5: Solve for x
    x = 24,706,681,341,995,868/128,809,630.80
  6. Step 6: Final answer
    x = 191,807,718.01

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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.