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Finding the Fourth Proportional to 210,099.23, 315,151.59 and 69,857.86

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Solution

The fourth proportional to 210,099.23, 315,151.59 and 69,857.86 is: 104,787.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,099.23 : 315,151.59 = 69,857.86 : x
  2. Step 2: Convert to fraction form
    210,099.23/315,151.59 = 69,857.86/x
  3. Step 3: Cross multiply
    210,099.23x = 315,151.59 × 69,857.86
  4. Step 4: Simplify right side
    210,099.23x = 22,015,815,717.99
  5. Step 5: Solve for x
    x = 22,015,815,717.99/210,099.23
  6. Step 6: Final answer
    x = 104,787.70

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1.5x scale

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.