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Finding the Fourth Proportional to 180,420.84, 270,436.86 and 75,172.68

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Solution

The fourth proportional to 180,420.84, 270,436.86 and 75,172.68 is: 112,678.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,420.84 : 270,436.86 = 75,172.68 : x
  2. Step 2: Convert to fraction form
    180,420.84/270,436.86 = 75,172.68/x
  3. Step 3: Cross multiply
    180,420.84x = 270,436.86 × 75,172.68
  4. Step 4: Simplify right side
    180,420.84x = 20,329,463,536.98
  5. Step 5: Solve for x
    x = 20,329,463,536.98/180,420.84
  6. Step 6: Final answer
    x = 112,678.02

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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.