Home / 78,029,187.30-117,043,780.95-73,246,218.30

Finding the Fourth Proportional to 78,029,187.30, 117,043,780.95 and 73,246,218.30

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Solution

The fourth proportional to 78,029,187.30, 117,043,780.95 and 73,246,218.30 is: 109,869,327.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029,187.30 : 117,043,780.95 = 73,246,218.30 : x
  2. Step 2: Convert to fraction form
    78,029,187.30/117,043,780.95 = 73,246,218.30/x
  3. Step 3: Cross multiply
    78,029,187.30x = 117,043,780.95 × 73,246,218.30
  4. Step 4: Simplify right side
    78,029,187.30x = 8,573,014,330,121,081
  5. Step 5: Solve for x
    x = 8,573,014,330,121,081/78,029,187.30
  6. Step 6: Final answer
    x = 109,869,327.45

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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.