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Finding the Fourth Proportional to 113,142.96, 169,720.11 and 28,903.77

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Solution

The fourth proportional to 113,142.96, 169,720.11 and 28,903.77 is: 43,357.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,142.96 : 169,720.11 = 28,903.77 : x
  2. Step 2: Convert to fraction form
    113,142.96/169,720.11 = 28,903.77/x
  3. Step 3: Cross multiply
    113,142.96x = 169,720.11 × 28,903.77
  4. Step 4: Simplify right side
    113,142.96x = 4,905,551,023.81
  5. Step 5: Solve for x
    x = 4,905,551,023.81/113,142.96
  6. Step 6: Final answer
    x = 43,357.10

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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.