Home / 107,909.80-161,911.40-57,931.58

Finding the Fourth Proportional to 107,909.80, 161,911.40 and 57,931.58

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Solution

The fourth proportional to 107,909.80, 161,911.40 and 57,931.58 is: 86,922.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,909.80 : 161,911.40 = 57,931.58 : x
  2. Step 2: Convert to fraction form
    107,909.80/161,911.40 = 57,931.58/x
  3. Step 3: Cross multiply
    107,909.80x = 161,911.40 × 57,931.58
  4. Step 4: Simplify right side
    107,909.80x = 9,379,783,222.01
  5. Step 5: Solve for x
    x = 9,379,783,222.01/107,909.80
  6. Step 6: Final answer
    x = 86,922.44

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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.