Home / 156,731.19-216,289.83-85,111.20

Finding the Fourth Proportional to 156,731.19, 216,289.83 and 85,111.20

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Solution

The fourth proportional to 156,731.19, 216,289.83 and 85,111.20 is: 117,453.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,731.19 : 216,289.83 = 85,111.20 : x
  2. Step 2: Convert to fraction form
    156,731.19/216,289.83 = 85,111.20/x
  3. Step 3: Cross multiply
    156,731.19x = 216,289.83 × 85,111.20
  4. Step 4: Simplify right side
    156,731.19x = 18,408,686,979.10
  5. Step 5: Solve for x
    x = 18,408,686,979.10/156,731.19
  6. Step 6: Final answer
    x = 117,453.88

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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.