Home / 131,392.04-197,115.78-42,638.64

Finding the Fourth Proportional to 131,392.04, 197,115.78 and 42,638.64

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Solution

The fourth proportional to 131,392.04, 197,115.78 and 42,638.64 is: 63,966.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,392.04 : 197,115.78 = 42,638.64 : x
  2. Step 2: Convert to fraction form
    131,392.04/197,115.78 = 42,638.64/x
  3. Step 3: Cross multiply
    131,392.04x = 197,115.78 × 42,638.64
  4. Step 4: Simplify right side
    131,392.04x = 8,404,748,781.74
  5. Step 5: Solve for x
    x = 8,404,748,781.74/131,392.04
  6. Step 6: Final answer
    x = 63,966.96

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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.