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Finding the Fourth Proportional to 99,153.64, 136,716.42 and 73,959.40

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Solution

The fourth proportional to 99,153.64, 136,716.42 and 73,959.40 is: 101,977.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,153.64 : 136,716.42 = 73,959.40 : x
  2. Step 2: Convert to fraction form
    99,153.64/136,716.42 = 73,959.40/x
  3. Step 3: Cross multiply
    99,153.64x = 136,716.42 × 73,959.40
  4. Step 4: Simplify right side
    99,153.64x = 10,111,464,393.35
  5. Step 5: Solve for x
    x = 10,111,464,393.35/99,153.64
  6. Step 6: Final answer
    x = 101,977.74

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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.