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Finding the Fourth Proportional to 99,033.66, 136,487.99 and 72,133.56

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Solution

The fourth proportional to 99,033.66, 136,487.99 and 72,133.56 is: 99,414.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,033.66 : 136,487.99 = 72,133.56 : x
  2. Step 2: Convert to fraction form
    99,033.66/136,487.99 = 72,133.56/x
  3. Step 3: Cross multiply
    99,033.66x = 136,487.99 × 72,133.56
  4. Step 4: Simplify right side
    99,033.66x = 9,845,364,255.28
  5. Step 5: Solve for x
    x = 9,845,364,255.28/99,033.66
  6. Step 6: Final answer
    x = 99,414.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.