Home / 155,741.64-214,920.90-87,765.56

Finding the Fourth Proportional to 155,741.64, 214,920.90 and 87,765.56

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Solution

The fourth proportional to 155,741.64, 214,920.90 and 87,765.56 is: 121,115.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,741.64 : 214,920.90 = 87,765.56 : x
  2. Step 2: Convert to fraction form
    155,741.64/214,920.90 = 87,765.56/x
  3. Step 3: Cross multiply
    155,741.64x = 214,920.90 × 87,765.56
  4. Step 4: Simplify right side
    155,741.64x = 18,862,653,144.20
  5. Step 5: Solve for x
    x = 18,862,653,144.20/155,741.64
  6. Step 6: Final answer
    x = 121,115.03

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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.