Home / 100,439.16-150,651.40-47,143.28

Finding the Fourth Proportional to 100,439.16, 150,651.40 and 47,143.28

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Solution

The fourth proportional to 100,439.16, 150,651.40 and 47,143.28 is: 70,711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,439.16 : 150,651.40 = 47,143.28 : x
  2. Step 2: Convert to fraction form
    100,439.16/150,651.40 = 47,143.28/x
  3. Step 3: Cross multiply
    100,439.16x = 150,651.40 × 47,143.28
  4. Step 4: Simplify right side
    100,439.16x = 7,102,201,132.59
  5. Step 5: Solve for x
    x = 7,102,201,132.59/100,439.16
  6. Step 6: Final answer
    x = 70,711.47

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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.