Home / 156,258.51-215,636.81-84,638.31

Finding the Fourth Proportional to 156,258.51, 215,636.81 and 84,638.31

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Solution

The fourth proportional to 156,258.51, 215,636.81 and 84,638.31 is: 116,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,258.51 : 215,636.81 = 84,638.31 : x
  2. Step 2: Convert to fraction form
    156,258.51/215,636.81 = 84,638.31/x
  3. Step 3: Cross multiply
    156,258.51x = 215,636.81 × 84,638.31
  4. Step 4: Simplify right side
    156,258.51x = 18,251,135,172.19
  5. Step 5: Solve for x
    x = 18,251,135,172.19/156,258.51
  6. Step 6: Final answer
    x = 116,800.90

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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.