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Finding the Fourth Proportional to 102,651.80, 153,977.70 and 75,003.80

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Solution

The fourth proportional to 102,651.80, 153,977.70 and 75,003.80 is: 112,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,651.80 : 153,977.70 = 75,003.80 : x
  2. Step 2: Convert to fraction form
    102,651.80/153,977.70 = 75,003.80/x
  3. Step 3: Cross multiply
    102,651.80x = 153,977.70 × 75,003.80
  4. Step 4: Simplify right side
    102,651.80x = 11,548,912,615.26
  5. Step 5: Solve for x
    x = 11,548,912,615.26/102,651.80
  6. Step 6: Final answer
    x = 112,505.70

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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.