Home / 138,018,128.60-206,851,358.10-73,352,912.60

Finding the Fourth Proportional to 138,018,128.60, 206,851,358.10 and 73,352,912.60

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Solution

The fourth proportional to 138,018,128.60, 206,851,358.10 and 73,352,912.60 is: 109,935,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,018,128.60 : 206,851,358.10 = 73,352,912.60 : x
  2. Step 2: Convert to fraction form
    138,018,128.60/206,851,358.10 = 73,352,912.60/x
  3. Step 3: Cross multiply
    138,018,128.60x = 206,851,358.10 × 73,352,912.60
  4. Step 4: Simplify right side
    138,018,128.60x = 15,173,149,591,900,600
  5. Step 5: Solve for x
    x = 15,173,149,591,900,600/138,018,128.60
  6. Step 6: Final answer
    x = 109,935,917.45

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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.