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Finding the Fourth Proportional to 99,499.40, 137,264.81 and 67,223.64

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Solution

The fourth proportional to 99,499.40, 137,264.81 and 67,223.64 is: 92,738.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,499.40 : 137,264.81 = 67,223.64 : x
  2. Step 2: Convert to fraction form
    99,499.40/137,264.81 = 67,223.64/x
  3. Step 3: Cross multiply
    99,499.40x = 137,264.81 × 67,223.64
  4. Step 4: Simplify right side
    99,499.40x = 9,227,439,835.99
  5. Step 5: Solve for x
    x = 9,227,439,835.99/99,499.40
  6. Step 6: Final answer
    x = 92,738.65

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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.