Home / 156,279.40-215,666.10-84,659.20

Finding the Fourth Proportional to 156,279.40, 215,666.10 and 84,659.20

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Solution

The fourth proportional to 156,279.40, 215,666.10 and 84,659.20 is: 116,829.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,279.40 : 215,666.10 = 84,659.20 : x
  2. Step 2: Convert to fraction form
    156,279.40/215,666.10 = 84,659.20/x
  3. Step 3: Cross multiply
    156,279.40x = 215,666.10 × 84,659.20
  4. Step 4: Simplify right side
    156,279.40x = 18,258,119,493.12
  5. Step 5: Solve for x
    x = 18,258,119,493.12/156,279.40
  6. Step 6: Final answer
    x = 116,829.98

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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.