Home / 99,720.18-149,547.80-33,142.43

Finding the Fourth Proportional to 99,720.18, 149,547.80 and 33,142.43

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Solution

The fourth proportional to 99,720.18, 149,547.80 and 33,142.43 is: 49,702.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,720.18 : 149,547.80 = 33,142.43 : x
  2. Step 2: Convert to fraction form
    99,720.18/149,547.80 = 33,142.43/x
  3. Step 3: Cross multiply
    99,720.18x = 149,547.80 × 33,142.43
  4. Step 4: Simplify right side
    99,720.18x = 4,956,377,949.88
  5. Step 5: Solve for x
    x = 4,956,377,949.88/99,720.18
  6. Step 6: Final answer
    x = 49,702.86

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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.