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Finding the Fourth Proportional to 113,591.40, 156,756.77 and 65,873.08

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Solution

The fourth proportional to 113,591.40, 156,756.77 and 65,873.08 is: 90,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,591.40 : 156,756.77 = 65,873.08 : x
  2. Step 2: Convert to fraction form
    113,591.40/156,756.77 = 65,873.08/x
  3. Step 3: Cross multiply
    113,591.40x = 156,756.77 × 65,873.08
  4. Step 4: Simplify right side
    113,591.40x = 10,326,051,250.75
  5. Step 5: Solve for x
    x = 10,326,051,250.75/113,591.40
  6. Step 6: Final answer
    x = 90,905.22

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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.