Home / 138,783,607.20-208,026,111.60-52,488,669.60

Finding the Fourth Proportional to 138,783,607.20, 208,026,111.60 and 52,488,669.60

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Solution

The fourth proportional to 138,783,607.20, 208,026,111.60 and 52,488,669.60 is: 78,676,538.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,783,607.20 : 208,026,111.60 = 52,488,669.60 : x
  2. Step 2: Convert to fraction form
    138,783,607.20/208,026,111.60 = 52,488,669.60/x
  3. Step 3: Cross multiply
    138,783,607.20x = 208,026,111.60 × 52,488,669.60
  4. Step 4: Simplify right side
    138,783,607.20x = 10,919,013,839,945,128
  5. Step 5: Solve for x
    x = 10,919,013,839,945,128/138,783,607.20
  6. Step 6: Final answer
    x = 78,676,538.68

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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.