Home / 155,611.72-214,741.30-87,628.44

Finding the Fourth Proportional to 155,611.72, 214,741.30 and 87,628.44

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Solution

The fourth proportional to 155,611.72, 214,741.30 and 87,628.44 is: 120,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,611.72 : 214,741.30 = 87,628.44 : x
  2. Step 2: Convert to fraction form
    155,611.72/214,741.30 = 87,628.44/x
  3. Step 3: Cross multiply
    155,611.72x = 214,741.30 × 87,628.44
  4. Step 4: Simplify right side
    155,611.72x = 18,817,445,122.57
  5. Step 5: Solve for x
    x = 18,817,445,122.57/155,611.72
  6. Step 6: Final answer
    x = 120,925.63

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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.