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Finding the Fourth Proportional to 131,630.80, 197,446.20 and 103,637.20

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Solution

The fourth proportional to 131,630.80, 197,446.20 and 103,637.20 is: 155,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,630.80 : 197,446.20 = 103,637.20 : x
  2. Step 2: Convert to fraction form
    131,630.80/197,446.20 = 103,637.20/x
  3. Step 3: Cross multiply
    131,630.80x = 197,446.20 × 103,637.20
  4. Step 4: Simplify right side
    131,630.80x = 20,462,771,318.64
  5. Step 5: Solve for x
    x = 20,462,771,318.64/131,630.80
  6. Step 6: Final answer
    x = 155,455.80

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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.