Home / 100,870.28-151,329.75-30,745.34

Finding the Fourth Proportional to 100,870.28, 151,329.75 and 30,745.34

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Solution

The fourth proportional to 100,870.28, 151,329.75 and 30,745.34 is: 46,125.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,870.28 : 151,329.75 = 30,745.34 : x
  2. Step 2: Convert to fraction form
    100,870.28/151,329.75 = 30,745.34/x
  3. Step 3: Cross multiply
    100,870.28x = 151,329.75 × 30,745.34
  4. Step 4: Simplify right side
    100,870.28x = 4,652,684,615.87
  5. Step 5: Solve for x
    x = 4,652,684,615.87/100,870.28
  6. Step 6: Final answer
    x = 46,125.43

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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.