Home / 156,258.87-215,635.92-84,638.72

Finding the Fourth Proportional to 156,258.87, 215,635.92 and 84,638.72

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Solution

The fourth proportional to 156,258.87, 215,635.92 and 84,638.72 is: 116,800.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,258.87 : 215,635.92 = 84,638.72 : x
  2. Step 2: Convert to fraction form
    156,258.87/215,635.92 = 84,638.72/x
  3. Step 3: Cross multiply
    156,258.87x = 215,635.92 × 84,638.72
  4. Step 4: Simplify right side
    156,258.87x = 18,251,148,952.61
  5. Step 5: Solve for x
    x = 18,251,148,952.61/156,258.87
  6. Step 6: Final answer
    x = 116,800.72

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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.