Home / 156,639.58-216,162.81-85,019.63

Finding the Fourth Proportional to 156,639.58, 216,162.81 and 85,019.63

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Solution

The fourth proportional to 156,639.58, 216,162.81 and 85,019.63 is: 117,327.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,639.58 : 216,162.81 = 85,019.63 : x
  2. Step 2: Convert to fraction form
    156,639.58/216,162.81 = 85,019.63/x
  3. Step 3: Cross multiply
    156,639.58x = 216,162.81 × 85,019.63
  4. Step 4: Simplify right side
    156,639.58x = 18,378,081,045.15
  5. Step 5: Solve for x
    x = 18,378,081,045.15/156,639.58
  6. Step 6: Final answer
    x = 117,327.19

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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.