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Finding the Fourth Proportional to 212,035.97, 292,652.20 and 125,978.39

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Solution

The fourth proportional to 212,035.97, 292,652.20 and 125,978.39 is: 173,875.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,035.97 : 292,652.20 = 125,978.39 : x
  2. Step 2: Convert to fraction form
    212,035.97/292,652.20 = 125,978.39/x
  3. Step 3: Cross multiply
    212,035.97x = 292,652.20 × 125,978.39
  4. Step 4: Simplify right side
    212,035.97x = 36,867,853,657.93
  5. Step 5: Solve for x
    x = 36,867,853,657.93/212,035.97
  6. Step 6: Final answer
    x = 173,875.47

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1.5x scale

Why These Related Problems?

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