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Finding the Fourth Proportional to 137,392.03, 206,117.61 and 42,620.32

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Solution

The fourth proportional to 137,392.03, 206,117.61 and 42,620.32 is: 63,939.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,392.03 : 206,117.61 = 42,620.32 : x
  2. Step 2: Convert to fraction form
    137,392.03/206,117.61 = 42,620.32/x
  3. Step 3: Cross multiply
    137,392.03x = 206,117.61 × 42,620.32
  4. Step 4: Simplify right side
    137,392.03x = 8,784,798,495.84
  5. Step 5: Solve for x
    x = 8,784,798,495.84/137,392.03
  6. Step 6: Final answer
    x = 63,939.65

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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.