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Finding the Fourth Proportional to 88,363.95, 122,015.84 and 81,953.20

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Solution

The fourth proportional to 88,363.95, 122,015.84 and 81,953.20 is: 113,163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,363.95 : 122,015.84 = 81,953.20 : x
  2. Step 2: Convert to fraction form
    88,363.95/122,015.84 = 81,953.20/x
  3. Step 3: Cross multiply
    88,363.95x = 122,015.84 × 81,953.20
  4. Step 4: Simplify right side
    88,363.95x = 9,999,588,281.44
  5. Step 5: Solve for x
    x = 9,999,588,281.44/88,363.95
  6. Step 6: Final answer
    x = 113,163.67

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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.