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Finding the Fourth Proportional to 107,216.40, 147,936.48 and 61,893.60

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Solution

The fourth proportional to 107,216.40, 147,936.48 and 61,893.60 is: 85,400.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,216.40 : 147,936.48 = 61,893.60 : x
  2. Step 2: Convert to fraction form
    107,216.40/147,936.48 = 61,893.60/x
  3. Step 3: Cross multiply
    107,216.40x = 147,936.48 × 61,893.60
  4. Step 4: Simplify right side
    107,216.40x = 9,156,321,318.53
  5. Step 5: Solve for x
    x = 9,156,321,318.53/107,216.40
  6. Step 6: Final answer
    x = 85,400.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.