Home / 113,219.56-156,078.32-79,122.18

Finding the Fourth Proportional to 113,219.56, 156,078.32 and 79,122.18

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Solution

The fourth proportional to 113,219.56, 156,078.32 and 79,122.18 is: 109,073.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,219.56 : 156,078.32 = 79,122.18 : x
  2. Step 2: Convert to fraction form
    113,219.56/156,078.32 = 79,122.18/x
  3. Step 3: Cross multiply
    113,219.56x = 156,078.32 × 79,122.18
  4. Step 4: Simplify right side
    113,219.56x = 12,349,256,929.14
  5. Step 5: Solve for x
    x = 12,349,256,929.14/113,219.56
  6. Step 6: Final answer
    x = 109,073.53

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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.