Home / 103,691.08-154,466.47-100,554.86

Finding the Fourth Proportional to 103,691.08, 154,466.47 and 100,554.86

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Solution

The fourth proportional to 103,691.08, 154,466.47 and 100,554.86 is: 149,794.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,691.08 : 154,466.47 = 100,554.86 : x
  2. Step 2: Convert to fraction form
    103,691.08/154,466.47 = 100,554.86/x
  3. Step 3: Cross multiply
    103,691.08x = 154,466.47 × 100,554.86
  4. Step 4: Simplify right side
    103,691.08x = 15,532,354,265.54
  5. Step 5: Solve for x
    x = 15,532,354,265.54/103,691.08
  6. Step 6: Final answer
    x = 149,794.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.