Home / 99,706.20-149,559.30-57,715.80

Finding the Fourth Proportional to 99,706.20, 149,559.30 and 57,715.80

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Solution

The fourth proportional to 99,706.20, 149,559.30 and 57,715.80 is: 86,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,706.20 : 149,559.30 = 57,715.80 : x
  2. Step 2: Convert to fraction form
    99,706.20/149,559.30 = 57,715.80/x
  3. Step 3: Cross multiply
    99,706.20x = 149,559.30 × 57,715.80
  4. Step 4: Simplify right side
    99,706.20x = 8,631,934,646.94
  5. Step 5: Solve for x
    x = 8,631,934,646.94/99,706.20
  6. Step 6: Final answer
    x = 86,573.70

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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.