Home / 113,640.45-156,922.97-71,272.05

Finding the Fourth Proportional to 113,640.45, 156,922.97 and 71,272.05

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Solution

The fourth proportional to 113,640.45, 156,922.97 and 71,272.05 is: 98,417.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,640.45 : 156,922.97 = 71,272.05 : x
  2. Step 2: Convert to fraction form
    113,640.45/156,922.97 = 71,272.05/x
  3. Step 3: Cross multiply
    113,640.45x = 156,922.97 × 71,272.05
  4. Step 4: Simplify right side
    113,640.45x = 11,184,221,407.63
  5. Step 5: Solve for x
    x = 11,184,221,407.63/113,640.45
  6. Step 6: Final answer
    x = 98,417.61

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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.