Home / 180,639.32-248,991.72-122,477.21

Finding the Fourth Proportional to 180,639.32, 248,991.72 and 122,477.21

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Solution

The fourth proportional to 180,639.32, 248,991.72 and 122,477.21 is: 168,821.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,639.32 : 248,991.72 = 122,477.21 : x
  2. Step 2: Convert to fraction form
    180,639.32/248,991.72 = 122,477.21/x
  3. Step 3: Cross multiply
    180,639.32x = 248,991.72 × 122,477.21
  4. Step 4: Simplify right side
    180,639.32x = 30,495,812,497.68
  5. Step 5: Solve for x
    x = 30,495,812,497.68/180,639.32
  6. Step 6: Final answer
    x = 168,821.57

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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.