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Finding the Fourth Proportional to 99,443.53, 137,238.21 and 57,008.44

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Solution

The fourth proportional to 99,443.53, 137,238.21 and 57,008.44 is: 78,675.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,443.53 : 137,238.21 = 57,008.44 : x
  2. Step 2: Convert to fraction form
    99,443.53/137,238.21 = 57,008.44/x
  3. Step 3: Cross multiply
    99,443.53x = 137,238.21 × 57,008.44
  4. Step 4: Simplify right side
    99,443.53x = 7,823,736,260.49
  5. Step 5: Solve for x
    x = 7,823,736,260.49/99,443.53
  6. Step 6: Final answer
    x = 78,675.17

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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.