Home / 156,258.36-215,636.45-84,638.21

Finding the Fourth Proportional to 156,258.36, 215,636.45 and 84,638.21

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Solution

The fourth proportional to 156,258.36, 215,636.45 and 84,638.21 is: 116,800.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,258.36 : 215,636.45 = 84,638.21 : x
  2. Step 2: Convert to fraction form
    156,258.36/215,636.45 = 84,638.21/x
  3. Step 3: Cross multiply
    156,258.36x = 215,636.45 × 84,638.21
  4. Step 4: Simplify right side
    156,258.36x = 18,251,081,637.38
  5. Step 5: Solve for x
    x = 18,251,081,637.38/156,258.36
  6. Step 6: Final answer
    x = 116,800.67

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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.