Home / 155,740.64-214,919.52-87,764.56

Finding the Fourth Proportional to 155,740.64, 214,919.52 and 87,764.56

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Solution

The fourth proportional to 155,740.64, 214,919.52 and 87,764.56 is: 121,113.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,740.64 : 214,919.52 = 87,764.56 : x
  2. Step 2: Convert to fraction form
    155,740.64/214,919.52 = 87,764.56/x
  3. Step 3: Cross multiply
    155,740.64x = 214,919.52 × 87,764.56
  4. Step 4: Simplify right side
    155,740.64x = 18,862,317,108.21
  5. Step 5: Solve for x
    x = 18,862,317,108.21/155,740.64
  6. Step 6: Final answer
    x = 121,113.65

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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.