Home / 156,131.40-215,461.68-84,512.04

Finding the Fourth Proportional to 156,131.40, 215,461.68 and 84,512.04

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Solution

The fourth proportional to 156,131.40, 215,461.68 and 84,512.04 is: 116,626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,131.40 : 215,461.68 = 84,512.04 : x
  2. Step 2: Convert to fraction form
    156,131.40/215,461.68 = 84,512.04/x
  3. Step 3: Cross multiply
    156,131.40x = 215,461.68 × 84,512.04
  4. Step 4: Simplify right side
    156,131.40x = 18,209,106,118.63
  5. Step 5: Solve for x
    x = 18,209,106,118.63/156,131.40
  6. Step 6: Final answer
    x = 116,626.80

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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.