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Finding the Fourth Proportional to 103,415.40, 155,151.90 and 50,826.60

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Solution

The fourth proportional to 103,415.40, 155,151.90 and 50,826.60 is: 76,254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,415.40 : 155,151.90 = 50,826.60 : x
  2. Step 2: Convert to fraction form
    103,415.40/155,151.90 = 50,826.60/x
  3. Step 3: Cross multiply
    103,415.40x = 155,151.90 × 50,826.60
  4. Step 4: Simplify right side
    103,415.40x = 7,885,843,560.54
  5. Step 5: Solve for x
    x = 7,885,843,560.54/103,415.40
  6. Step 6: Final answer
    x = 76,254.05

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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.