Home / 78,734,100.20-118,101,150.30-67,774,605.80

Finding the Fourth Proportional to 78,734,100.20, 118,101,150.30 and 67,774,605.80

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Solution

The fourth proportional to 78,734,100.20, 118,101,150.30 and 67,774,605.80 is: 101,661,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734,100.20 : 118,101,150.30 = 67,774,605.80 : x
  2. Step 2: Convert to fraction form
    78,734,100.20/118,101,150.30 = 67,774,605.80/x
  3. Step 3: Cross multiply
    78,734,100.20x = 118,101,150.30 × 67,774,605.80
  4. Step 4: Simplify right side
    78,734,100.20x = 8,004,258,906,109,051
  5. Step 5: Solve for x
    x = 8,004,258,906,109,051/78,734,100.20
  6. Step 6: Final answer
    x = 101,661,908.70

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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.