Home / 100,931.96-151,421.88-30,806.84

Finding the Fourth Proportional to 100,931.96, 151,421.88 and 30,806.84

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Solution

The fourth proportional to 100,931.96, 151,421.88 and 30,806.84 is: 46,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,931.96 : 151,421.88 = 30,806.84 : x
  2. Step 2: Convert to fraction form
    100,931.96/151,421.88 = 30,806.84/x
  3. Step 3: Cross multiply
    100,931.96x = 151,421.88 × 30,806.84
  4. Step 4: Simplify right side
    100,931.96x = 4,664,829,629.66
  5. Step 5: Solve for x
    x = 4,664,829,629.66/100,931.96
  6. Step 6: Final answer
    x = 46,217.57

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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.