Home / 81,657,005.60-122,485,508.40-81,090,135.20

Finding the Fourth Proportional to 81,657,005.60, 122,485,508.40 and 81,090,135.20

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Solution

The fourth proportional to 81,657,005.60, 122,485,508.40 and 81,090,135.20 is: 121,635,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,005.60 : 122,485,508.40 = 81,090,135.20 : x
  2. Step 2: Convert to fraction form
    81,657,005.60/122,485,508.40 = 81,090,135.20/x
  3. Step 3: Cross multiply
    81,657,005.60x = 122,485,508.40 × 81,090,135.20
  4. Step 4: Simplify right side
    81,657,005.60x = 9,932,366,436,196,736
  5. Step 5: Solve for x
    x = 9,932,366,436,196,736/81,657,005.60
  6. Step 6: Final answer
    x = 121,635,202.80

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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.