Home / 148,798.20-205,376.94-85,172.76

Finding the Fourth Proportional to 148,798.20, 205,376.94 and 85,172.76

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Solution

The fourth proportional to 148,798.20, 205,376.94 and 85,172.76 is: 117,558.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,798.20 : 205,376.94 = 85,172.76 : x
  2. Step 2: Convert to fraction form
    148,798.20/205,376.94 = 85,172.76/x
  3. Step 3: Cross multiply
    148,798.20x = 205,376.94 × 85,172.76
  4. Step 4: Simplify right side
    148,798.20x = 17,492,520,820.15
  5. Step 5: Solve for x
    x = 17,492,520,820.15/148,798.20
  6. Step 6: Final answer
    x = 117,558.69

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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.