Home / 103,238.40-154,855.78-28,358.26

Finding the Fourth Proportional to 103,238.40, 154,855.78 and 28,358.26

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Solution

The fourth proportional to 103,238.40, 154,855.78 and 28,358.26 is: 42,536.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,238.40 : 154,855.78 = 28,358.26 : x
  2. Step 2: Convert to fraction form
    103,238.40/154,855.78 = 28,358.26/x
  3. Step 3: Cross multiply
    103,238.40x = 154,855.78 × 28,358.26
  4. Step 4: Simplify right side
    103,238.40x = 4,391,440,173.22
  5. Step 5: Solve for x
    x = 4,391,440,173.22/103,238.40
  6. Step 6: Final answer
    x = 42,536.89

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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.