Home / 155,742.64-214,922.28-87,766.56

Finding the Fourth Proportional to 155,742.64, 214,922.28 and 87,766.56

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Solution

The fourth proportional to 155,742.64, 214,922.28 and 87,766.56 is: 121,116.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,742.64 : 214,922.28 = 87,766.56 : x
  2. Step 2: Convert to fraction form
    155,742.64/214,922.28 = 87,766.56/x
  3. Step 3: Cross multiply
    155,742.64x = 214,922.28 × 87,766.56
  4. Step 4: Simplify right side
    155,742.64x = 18,862,989,182.96
  5. Step 5: Solve for x
    x = 18,862,989,182.96/155,742.64
  6. Step 6: Final answer
    x = 121,116.41

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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.