Home / 208,281.42-312,357.47-75,144.33

Finding the Fourth Proportional to 208,281.42, 312,357.47 and 75,144.33

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Solution

The fourth proportional to 208,281.42, 312,357.47 and 75,144.33 is: 112,693.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,281.42 : 312,357.47 = 75,144.33 : x
  2. Step 2: Convert to fraction form
    208,281.42/312,357.47 = 75,144.33/x
  3. Step 3: Cross multiply
    208,281.42x = 312,357.47 × 75,144.33
  4. Step 4: Simplify right side
    208,281.42x = 23,471,892,427.92
  5. Step 5: Solve for x
    x = 23,471,892,427.92/208,281.42
  6. Step 6: Final answer
    x = 112,693.16

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1.5x scale

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.