Home / 191,785.12-264,686.10-115,343.20

Finding the Fourth Proportional to 191,785.12, 264,686.10 and 115,343.20

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Solution

The fourth proportional to 191,785.12, 264,686.10 and 115,343.20 is: 159,187.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,785.12 : 264,686.10 = 115,343.20 : x
  2. Step 2: Convert to fraction form
    191,785.12/264,686.10 = 115,343.20/x
  3. Step 3: Cross multiply
    191,785.12x = 264,686.10 × 115,343.20
  4. Step 4: Simplify right side
    191,785.12x = 30,529,741,769.52
  5. Step 5: Solve for x
    x = 30,529,741,769.52/191,785.12
  6. Step 6: Final answer
    x = 159,187.23

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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.