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Finding the Fourth Proportional to 165,414.35, 228,070.05 and 139,875.05

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Solution

The fourth proportional to 165,414.35, 228,070.05 and 139,875.05 is: 192,856.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,414.35 : 228,070.05 = 139,875.05 : x
  2. Step 2: Convert to fraction form
    165,414.35/228,070.05 = 139,875.05/x
  3. Step 3: Cross multiply
    165,414.35x = 228,070.05 × 139,875.05
  4. Step 4: Simplify right side
    165,414.35x = 31,901,308,506.90
  5. Step 5: Solve for x
    x = 31,901,308,506.90/165,414.35
  6. Step 6: Final answer
    x = 192,856.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.