Home / 109,919-151,688.23-62,171.32

Finding the Fourth Proportional to 109,919, 151,688.23 and 62,171.32

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Solution

The fourth proportional to 109,919, 151,688.23 and 62,171.32 is: 85,796.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,919 : 151,688.23 = 62,171.32 : x
  2. Step 2: Convert to fraction form
    109,919/151,688.23 = 62,171.32/x
  3. Step 3: Cross multiply
    109,919x = 151,688.23 × 62,171.32
  4. Step 4: Simplify right side
    109,919x = 9,430,657,487.56
  5. Step 5: Solve for x
    x = 9,430,657,487.56/109,919
  6. Step 6: Final answer
    x = 85,796.43

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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.