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Finding the Fourth Proportional to 191,037.62, 286,457.88 and 85,766.42

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Solution

The fourth proportional to 191,037.62, 286,457.88 and 85,766.42 is: 128,605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,037.62 : 286,457.88 = 85,766.42 : x
  2. Step 2: Convert to fraction form
    191,037.62/286,457.88 = 85,766.42/x
  3. Step 3: Cross multiply
    191,037.62x = 286,457.88 × 85,766.42
  4. Step 4: Simplify right side
    191,037.62x = 24,568,466,848.39
  5. Step 5: Solve for x
    x = 24,568,466,848.39/191,037.62
  6. Step 6: Final answer
    x = 128,605.39

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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.