Home / 109,156,727.70-163,735,091.55-78,386,293.80

Finding the Fourth Proportional to 109,156,727.70, 163,735,091.55 and 78,386,293.80

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Solution

The fourth proportional to 109,156,727.70, 163,735,091.55 and 78,386,293.80 is: 117,579,440.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,156,727.70 : 163,735,091.55 = 78,386,293.80 : x
  2. Step 2: Convert to fraction form
    109,156,727.70/163,735,091.55 = 78,386,293.80/x
  3. Step 3: Cross multiply
    109,156,727.70x = 163,735,091.55 × 78,386,293.80
  4. Step 4: Simplify right side
    109,156,727.70x = 12,834,586,991,608,198
  5. Step 5: Solve for x
    x = 12,834,586,991,608,198/109,156,727.70
  6. Step 6: Final answer
    x = 117,579,440.70

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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.