Home / 76,355.08-113,912.63-72,221.65

Finding the Fourth Proportional to 76,355.08, 113,912.63 and 72,221.65

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Solution

The fourth proportional to 76,355.08, 113,912.63 and 72,221.65 is: 107,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,355.08 : 113,912.63 = 72,221.65 : x
  2. Step 2: Convert to fraction form
    76,355.08/113,912.63 = 72,221.65/x
  3. Step 3: Cross multiply
    76,355.08x = 113,912.63 × 72,221.65
  4. Step 4: Simplify right side
    76,355.08x = 8,226,958,125.63
  5. Step 5: Solve for x
    x = 8,226,958,125.63/76,355.08
  6. Step 6: Final answer
    x = 107,746.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.