Home / 99,765.46-137,699.90-57,348.60

Finding the Fourth Proportional to 99,765.46, 137,699.90 and 57,348.60

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Solution

The fourth proportional to 99,765.46, 137,699.90 and 57,348.60 is: 79,154.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,765.46 : 137,699.90 = 57,348.60 : x
  2. Step 2: Convert to fraction form
    99,765.46/137,699.90 = 57,348.60/x
  3. Step 3: Cross multiply
    99,765.46x = 137,699.90 × 57,348.60
  4. Step 4: Simplify right side
    99,765.46x = 7,896,896,485.14
  5. Step 5: Solve for x
    x = 7,896,896,485.14/99,765.46
  6. Step 6: Final answer
    x = 79,154.61

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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.