Home / 91,834.40-137,557.20-72,005.60

Finding the Fourth Proportional to 91,834.40, 137,557.20 and 72,005.60

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Solution

The fourth proportional to 91,834.40, 137,557.20 and 72,005.60 is: 107,855.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,834.40 : 137,557.20 = 72,005.60 : x
  2. Step 2: Convert to fraction form
    91,834.40/137,557.20 = 72,005.60/x
  3. Step 3: Cross multiply
    91,834.40x = 137,557.20 × 72,005.60
  4. Step 4: Simplify right side
    91,834.40x = 9,904,888,720.32
  5. Step 5: Solve for x
    x = 9,904,888,720.32/91,834.40
  6. Step 6: Final answer
    x = 107,855.97

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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.