Home / 156,639.48-216,162.73-85,019.54

Finding the Fourth Proportional to 156,639.48, 216,162.73 and 85,019.54

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Solution

The fourth proportional to 156,639.48, 216,162.73 and 85,019.54 is: 117,327.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,639.48 : 216,162.73 = 85,019.54 : x
  2. Step 2: Convert to fraction form
    156,639.48/216,162.73 = 85,019.54/x
  3. Step 3: Cross multiply
    156,639.48x = 216,162.73 × 85,019.54
  4. Step 4: Simplify right side
    156,639.48x = 18,378,054,788.93
  5. Step 5: Solve for x
    x = 18,378,054,788.93/156,639.48
  6. Step 6: Final answer
    x = 117,327.09

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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.