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Finding the Fourth Proportional to 113,878.60, 170,817.90 and 91,735.23

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Solution

The fourth proportional to 113,878.60, 170,817.90 and 91,735.23 is: 137,602.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,878.60 : 170,817.90 = 91,735.23 : x
  2. Step 2: Convert to fraction form
    113,878.60/170,817.90 = 91,735.23/x
  3. Step 3: Cross multiply
    113,878.60x = 170,817.90 × 91,735.23
  4. Step 4: Simplify right side
    113,878.60x = 15,670,019,344.62
  5. Step 5: Solve for x
    x = 15,670,019,344.62/113,878.60
  6. Step 6: Final answer
    x = 137,602.85

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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.