Home / 101,015.40-139,489.38-63,354.60

Finding the Fourth Proportional to 101,015.40, 139,489.38 and 63,354.60

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Solution

The fourth proportional to 101,015.40, 139,489.38 and 63,354.60 is: 87,484.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,015.40 : 139,489.38 = 63,354.60 : x
  2. Step 2: Convert to fraction form
    101,015.40/139,489.38 = 63,354.60/x
  3. Step 3: Cross multiply
    101,015.40x = 139,489.38 × 63,354.60
  4. Step 4: Simplify right side
    101,015.40x = 8,837,293,874.15
  5. Step 5: Solve for x
    x = 8,837,293,874.15/101,015.40
  6. Step 6: Final answer
    x = 87,484.62

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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.