Home / 103,676.50-143,023.35-90,226.45

Finding the Fourth Proportional to 103,676.50, 143,023.35 and 90,226.45

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Solution

The fourth proportional to 103,676.50, 143,023.35 and 90,226.45 is: 124,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,676.50 : 143,023.35 = 90,226.45 : x
  2. Step 2: Convert to fraction form
    103,676.50/143,023.35 = 90,226.45/x
  3. Step 3: Cross multiply
    103,676.50x = 143,023.35 × 90,226.45
  4. Step 4: Simplify right side
    103,676.50x = 12,904,489,137.61
  5. Step 5: Solve for x
    x = 12,904,489,137.61/103,676.50
  6. Step 6: Final answer
    x = 124,468.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.