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Finding the Fourth Proportional to 99,606.80, 137,325.15 and 80,465.01

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Solution

The fourth proportional to 99,606.80, 137,325.15 and 80,465.01 is: 110,934.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,606.80 : 137,325.15 = 80,465.01 : x
  2. Step 2: Convert to fraction form
    99,606.80/137,325.15 = 80,465.01/x
  3. Step 3: Cross multiply
    99,606.80x = 137,325.15 × 80,465.01
  4. Step 4: Simplify right side
    99,606.80x = 11,049,869,568.00
  5. Step 5: Solve for x
    x = 11,049,869,568.00/99,606.80
  6. Step 6: Final answer
    x = 110,934.90

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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.