Home / 191,455.10-287,182.70-86,151.05

Finding the Fourth Proportional to 191,455.10, 287,182.70 and 86,151.05

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Solution

The fourth proportional to 191,455.10, 287,182.70 and 86,151.05 is: 129,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,455.10 : 287,182.70 = 86,151.05 : x
  2. Step 2: Convert to fraction form
    191,455.10/287,182.70 = 86,151.05/x
  3. Step 3: Cross multiply
    191,455.10x = 287,182.70 × 86,151.05
  4. Step 4: Simplify right side
    191,455.10x = 24,741,090,716.08
  5. Step 5: Solve for x
    x = 24,741,090,716.08/191,455.10
  6. Step 6: Final answer
    x = 129,226.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.