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Finding the Fourth Proportional to 109,890,500.80, 164,910,400.80 and 61,368,260.80

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Solution

The fourth proportional to 109,890,500.80, 164,910,400.80 and 61,368,260.80 is: 92,094,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,890,500.80 : 164,910,400.80 = 61,368,260.80 : x
  2. Step 2: Convert to fraction form
    109,890,500.80/164,910,400.80 = 61,368,260.80/x
  3. Step 3: Cross multiply
    109,890,500.80x = 164,910,400.80 × 61,368,260.80
  4. Step 4: Simplify right side
    109,890,500.80x = 10,120,264,484,926,928
  5. Step 5: Solve for x
    x = 10,120,264,484,926,928/109,890,500.80
  6. Step 6: Final answer
    x = 92,094,079.21

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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.