Home / 91,701.45-137,348.96-70,485.30

Finding the Fourth Proportional to 91,701.45, 137,348.96 and 70,485.30

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Solution

The fourth proportional to 91,701.45, 137,348.96 and 70,485.30 is: 105,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,701.45 : 137,348.96 = 70,485.30 : x
  2. Step 2: Convert to fraction form
    91,701.45/137,348.96 = 70,485.30/x
  3. Step 3: Cross multiply
    91,701.45x = 137,348.96 × 70,485.30
  4. Step 4: Simplify right side
    91,701.45x = 9,681,082,297.86
  5. Step 5: Solve for x
    x = 9,681,082,297.86/91,701.45
  6. Step 6: Final answer
    x = 105,571.75

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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.