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Finding the Fourth Proportional to 120,853.40, 181,280.10 and 61,804.40

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Solution

The fourth proportional to 120,853.40, 181,280.10 and 61,804.40 is: 92,706.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,853.40 : 181,280.10 = 61,804.40 : x
  2. Step 2: Convert to fraction form
    120,853.40/181,280.10 = 61,804.40/x
  3. Step 3: Cross multiply
    120,853.40x = 181,280.10 × 61,804.40
  4. Step 4: Simplify right side
    120,853.40x = 11,203,907,812.44
  5. Step 5: Solve for x
    x = 11,203,907,812.44/120,853.40
  6. Step 6: Final answer
    x = 92,706.60

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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.