Home / 113,621.87-156,779.85-68,289.01

Finding the Fourth Proportional to 113,621.87, 156,779.85 and 68,289.01

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Solution

The fourth proportional to 113,621.87, 156,779.85 and 68,289.01 is: 94,227.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,621.87 : 156,779.85 = 68,289.01 : x
  2. Step 2: Convert to fraction form
    113,621.87/156,779.85 = 68,289.01/x
  3. Step 3: Cross multiply
    113,621.87x = 156,779.85 × 68,289.01
  4. Step 4: Simplify right side
    113,621.87x = 10,706,340,744.45
  5. Step 5: Solve for x
    x = 10,706,340,744.45/113,621.87
  6. Step 6: Final answer
    x = 94,227.82

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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.