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Finding the Fourth Proportional to 191,622.54, 287,420.44 and 71,656.68

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Solution

The fourth proportional to 191,622.54, 287,420.44 and 71,656.68 is: 107,480.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,622.54 : 287,420.44 = 71,656.68 : x
  2. Step 2: Convert to fraction form
    191,622.54/287,420.44 = 71,656.68/x
  3. Step 3: Cross multiply
    191,622.54x = 287,420.44 × 71,656.68
  4. Step 4: Simplify right side
    191,622.54x = 20,595,594,494.54
  5. Step 5: Solve for x
    x = 20,595,594,494.54/191,622.54
  6. Step 6: Final answer
    x = 107,480.02

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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.