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Finding the Fourth Proportional to 102,954.60, 142,026.72 and 64,760.52

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Solution

The fourth proportional to 102,954.60, 142,026.72 and 64,760.52 is: 89,337.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,954.60 : 142,026.72 = 64,760.52 : x
  2. Step 2: Convert to fraction form
    102,954.60/142,026.72 = 64,760.52/x
  3. Step 3: Cross multiply
    102,954.60x = 142,026.72 × 64,760.52
  4. Step 4: Simplify right side
    102,954.60x = 9,197,724,241.09
  5. Step 5: Solve for x
    x = 9,197,724,241.09/102,954.60
  6. Step 6: Final answer
    x = 89,337.67

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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.