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Finding the Fourth Proportional to 191,432, 287,150.44 and 66,773

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Solution

The fourth proportional to 191,432, 287,150.44 and 66,773 is: 100,160.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,432 : 287,150.44 = 66,773 : x
  2. Step 2: Convert to fraction form
    191,432/287,150.44 = 66,773/x
  3. Step 3: Cross multiply
    191,432x = 287,150.44 × 66,773
  4. Step 4: Simplify right side
    191,432x = 19,173,896,330.12
  5. Step 5: Solve for x
    x = 19,173,896,330.12/191,432
  6. Step 6: Final answer
    x = 100,160.35

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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.