Home / 100,931.46-151,421.13-30,806.34

Finding the Fourth Proportional to 100,931.46, 151,421.13 and 30,806.34

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Solution

The fourth proportional to 100,931.46, 151,421.13 and 30,806.34 is: 46,216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,931.46 : 151,421.13 = 30,806.34 : x
  2. Step 2: Convert to fraction form
    100,931.46/151,421.13 = 30,806.34/x
  3. Step 3: Cross multiply
    100,931.46x = 151,421.13 × 30,806.34
  4. Step 4: Simplify right side
    100,931.46x = 4,664,730,813.96
  5. Step 5: Solve for x
    x = 4,664,730,813.96/100,931.46
  6. Step 6: Final answer
    x = 46,216.82

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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.