Home / 100,621.08-150,931.62-30,500.40

Finding the Fourth Proportional to 100,621.08, 150,931.62 and 30,500.40

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Solution

The fourth proportional to 100,621.08, 150,931.62 and 30,500.40 is: 45,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621.08 : 150,931.62 = 30,500.40 : x
  2. Step 2: Convert to fraction form
    100,621.08/150,931.62 = 30,500.40/x
  3. Step 3: Cross multiply
    100,621.08x = 150,931.62 × 30,500.40
  4. Step 4: Simplify right side
    100,621.08x = 4,603,474,782.65
  5. Step 5: Solve for x
    x = 4,603,474,782.65/100,621.08
  6. Step 6: Final answer
    x = 45,750.60

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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.