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Finding the Fourth Proportional to 102,637.20, 153,934.20 and 43,474.80

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Solution

The fourth proportional to 102,637.20, 153,934.20 and 43,474.80 is: 65,203.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,637.20 : 153,934.20 = 43,474.80 : x
  2. Step 2: Convert to fraction form
    102,637.20/153,934.20 = 43,474.80/x
  3. Step 3: Cross multiply
    102,637.20x = 153,934.20 × 43,474.80
  4. Step 4: Simplify right side
    102,637.20x = 6,692,258,558.16
  5. Step 5: Solve for x
    x = 6,692,258,558.16/102,637.20
  6. Step 6: Final answer
    x = 65,203.05

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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.