Home / 103,639.03-155,458.53-28,759.18

Finding the Fourth Proportional to 103,639.03, 155,458.53 and 28,759.18

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Solution

The fourth proportional to 103,639.03, 155,458.53 and 28,759.18 is: 43,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.03 : 155,458.53 = 28,759.18 : x
  2. Step 2: Convert to fraction form
    103,639.03/155,458.53 = 28,759.18/x
  3. Step 3: Cross multiply
    103,639.03x = 155,458.53 × 28,759.18
  4. Step 4: Simplify right side
    103,639.03x = 4,470,859,846.81
  5. Step 5: Solve for x
    x = 4,470,859,846.81/103,639.03
  6. Step 6: Final answer
    x = 43,138.77

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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.