Home / 91,845.40-137,573.70-72,016.60

Finding the Fourth Proportional to 91,845.40, 137,573.70 and 72,016.60

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Solution

The fourth proportional to 91,845.40, 137,573.70 and 72,016.60 is: 107,872.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,845.40 : 137,573.70 = 72,016.60 : x
  2. Step 2: Convert to fraction form
    91,845.40/137,573.70 = 72,016.60/x
  3. Step 3: Cross multiply
    91,845.40x = 137,573.70 × 72,016.60
  4. Step 4: Simplify right side
    91,845.40x = 9,907,590,123.42
  5. Step 5: Solve for x
    x = 9,907,590,123.42/91,845.40
  6. Step 6: Final answer
    x = 107,872.47

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1.5x scale

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.