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Finding the Fourth Proportional to 137,210.64, 205,813.72 and 43,715.12

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Solution

The fourth proportional to 137,210.64, 205,813.72 and 43,715.12 is: 65,571.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,210.64 : 205,813.72 = 43,715.12 : x
  2. Step 2: Convert to fraction form
    137,210.64/205,813.72 = 43,715.12/x
  3. Step 3: Cross multiply
    137,210.64x = 205,813.72 × 43,715.12
  4. Step 4: Simplify right side
    137,210.64x = 8,997,171,467.45
  5. Step 5: Solve for x
    x = 8,997,171,467.45/137,210.64
  6. Step 6: Final answer
    x = 65,571.97

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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.