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Finding the Fourth Proportional to 99,708.20, 149,197.80 and 73,464.20

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Solution

The fourth proportional to 99,708.20, 149,197.80 and 73,464.20 is: 109,927.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,708.20 : 149,197.80 = 73,464.20 : x
  2. Step 2: Convert to fraction form
    99,708.20/149,197.80 = 73,464.20/x
  3. Step 3: Cross multiply
    99,708.20x = 149,197.80 × 73,464.20
  4. Step 4: Simplify right side
    99,708.20x = 10,960,697,018.76
  5. Step 5: Solve for x
    x = 10,960,697,018.76/99,708.20
  6. Step 6: Final answer
    x = 109,927.74

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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.