Home / 191,811.42-287,815.95-85,268.88

Finding the Fourth Proportional to 191,811.42, 287,815.95 and 85,268.88

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Solution

The fourth proportional to 191,811.42, 287,815.95 and 85,268.88 is: 127,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,811.42 : 287,815.95 = 85,268.88 : x
  2. Step 2: Convert to fraction form
    191,811.42/287,815.95 = 85,268.88/x
  3. Step 3: Cross multiply
    191,811.42x = 287,815.95 × 85,268.88
  4. Step 4: Simplify right side
    191,811.42x = 24,541,743,702.64
  5. Step 5: Solve for x
    x = 24,541,743,702.64/191,811.42
  6. Step 6: Final answer
    x = 127,947.25

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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.