Home / 130,764.72-180,111.57-100,492.09

Finding the Fourth Proportional to 130,764.72, 180,111.57 and 100,492.09

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Solution

The fourth proportional to 130,764.72, 180,111.57 and 100,492.09 is: 138,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,764.72 : 180,111.57 = 100,492.09 : x
  2. Step 2: Convert to fraction form
    130,764.72/180,111.57 = 100,492.09/x
  3. Step 3: Cross multiply
    130,764.72x = 180,111.57 × 100,492.09
  4. Step 4: Simplify right side
    130,764.72x = 18,099,787,652.20
  5. Step 5: Solve for x
    x = 18,099,787,652.20/130,764.72
  6. Step 6: Final answer
    x = 138,414.92

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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.