Home / 78,187,102.40-117,504,602.40-68,333,355.20

Finding the Fourth Proportional to 78,187,102.40, 117,504,602.40 and 68,333,355.20

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Solution

The fourth proportional to 78,187,102.40, 117,504,602.40 and 68,333,355.20 is: 102,695,757.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,187,102.40 : 117,504,602.40 = 68,333,355.20 : x
  2. Step 2: Convert to fraction form
    78,187,102.40/117,504,602.40 = 68,333,355.20/x
  3. Step 3: Cross multiply
    78,187,102.40x = 117,504,602.40 × 68,333,355.20
  4. Step 4: Simplify right side
    78,187,102.40x = 8,029,483,733,433,973
  5. Step 5: Solve for x
    x = 8,029,483,733,433,973/78,187,102.40
  6. Step 6: Final answer
    x = 102,695,757.83

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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.