Home / 138,783,004.20-208,025,207.10-52,488,066.60

Finding the Fourth Proportional to 138,783,004.20, 208,025,207.10 and 52,488,066.60

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Solution

The fourth proportional to 138,783,004.20, 208,025,207.10 and 52,488,066.60 is: 78,675,634.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,783,004.20 : 208,025,207.10 = 52,488,066.60 : x
  2. Step 2: Convert to fraction form
    138,783,004.20/208,025,207.10 = 52,488,066.60/x
  3. Step 3: Cross multiply
    138,783,004.20x = 208,025,207.10 × 52,488,066.60
  4. Step 4: Simplify right side
    138,783,004.20x = 10,918,840,924,743,592
  5. Step 5: Solve for x
    x = 10,918,840,924,743,592/138,783,004.20
  6. Step 6: Final answer
    x = 78,675,634.58

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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.