Home / 191,268-286,936.20-78,885.72

Finding the Fourth Proportional to 191,268, 286,936.20 and 78,885.72

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Solution

The fourth proportional to 191,268, 286,936.20 and 78,885.72 is: 118,342.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,268 : 286,936.20 = 78,885.72 : x
  2. Step 2: Convert to fraction form
    191,268/286,936.20 = 78,885.72/x
  3. Step 3: Cross multiply
    191,268x = 286,936.20 × 78,885.72
  4. Step 4: Simplify right side
    191,268x = 22,635,168,731.06
  5. Step 5: Solve for x
    x = 22,635,168,731.06/191,268
  6. Step 6: Final answer
    x = 118,342.69

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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.