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Finding the Fourth Proportional to 127,709,893.60, 191,589,723.60 and 51,019,871.20

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Solution

The fourth proportional to 127,709,893.60, 191,589,723.60 and 51,019,871.20 is: 76,539,747.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,709,893.60 : 191,589,723.60 = 51,019,871.20 : x
  2. Step 2: Convert to fraction form
    127,709,893.60/191,589,723.60 = 51,019,871.20/x
  3. Step 3: Cross multiply
    127,709,893.60x = 191,589,723.60 × 51,019,871.20
  4. Step 4: Simplify right side
    127,709,893.60x = 9,774,883,021,315,600
  5. Step 5: Solve for x
    x = 9,774,883,021,315,600/127,709,893.60
  6. Step 6: Final answer
    x = 76,539,747.59

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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.