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Finding the Fourth Proportional to 191,167.58, 286,754.08 and 72,845.40

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Solution

The fourth proportional to 191,167.58, 286,754.08 and 72,845.40 is: 109,269.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,167.58 : 286,754.08 = 72,845.40 : x
  2. Step 2: Convert to fraction form
    191,167.58/286,754.08 = 72,845.40/x
  3. Step 3: Cross multiply
    191,167.58x = 286,754.08 × 72,845.40
  4. Step 4: Simplify right side
    191,167.58x = 20,888,715,659.23
  5. Step 5: Solve for x
    x = 20,888,715,659.23/191,167.58
  6. Step 6: Final answer
    x = 109,269.13

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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.