Home / 191,819.28-287,827.80-85,276.74

Finding the Fourth Proportional to 191,819.28, 287,827.80 and 85,276.74

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Solution

The fourth proportional to 191,819.28, 287,827.80 and 85,276.74 is: 127,959.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,819.28 : 287,827.80 = 85,276.74 : x
  2. Step 2: Convert to fraction form
    191,819.28/287,827.80 = 85,276.74/x
  3. Step 3: Cross multiply
    191,819.28x = 287,827.80 × 85,276.74
  4. Step 4: Simplify right side
    191,819.28x = 24,545,016,465.37
  5. Step 5: Solve for x
    x = 24,545,016,465.37/191,819.28
  6. Step 6: Final answer
    x = 127,959.07

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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.