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Finding the Fourth Proportional to 135,258.60, 186,543.60 and 101,346.72

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Solution

The fourth proportional to 135,258.60, 186,543.60 and 101,346.72 is: 139,773.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,258.60 : 186,543.60 = 101,346.72 : x
  2. Step 2: Convert to fraction form
    135,258.60/186,543.60 = 101,346.72/x
  3. Step 3: Cross multiply
    135,258.60x = 186,543.60 × 101,346.72
  4. Step 4: Simplify right side
    135,258.60x = 18,905,581,996.99
  5. Step 5: Solve for x
    x = 18,905,581,996.99/135,258.60
  6. Step 6: Final answer
    x = 139,773.60

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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.