Home / 103,545.36-155,321.58-28,659.24

Finding the Fourth Proportional to 103,545.36, 155,321.58 and 28,659.24

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Solution

The fourth proportional to 103,545.36, 155,321.58 and 28,659.24 is: 42,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,545.36 : 155,321.58 = 28,659.24 : x
  2. Step 2: Convert to fraction form
    103,545.36/155,321.58 = 28,659.24/x
  3. Step 3: Cross multiply
    103,545.36x = 155,321.58 × 28,659.24
  4. Step 4: Simplify right side
    103,545.36x = 4,451,398,438.40
  5. Step 5: Solve for x
    x = 4,451,398,438.40/103,545.36
  6. Step 6: Final answer
    x = 42,989.84

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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.