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Finding the Fourth Proportional to 113,142.88, 169,715.87 and 28,903.74

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Solution

The fourth proportional to 113,142.88, 169,715.87 and 28,903.74 is: 43,356.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,142.88 : 169,715.87 = 28,903.74 : x
  2. Step 2: Convert to fraction form
    113,142.88/169,715.87 = 28,903.74/x
  3. Step 3: Cross multiply
    113,142.88x = 169,715.87 × 28,903.74
  4. Step 4: Simplify right side
    113,142.88x = 4,905,423,380.35
  5. Step 5: Solve for x
    x = 4,905,423,380.35/113,142.88
  6. Step 6: Final answer
    x = 43,356.01

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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.