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Finding the Fourth Proportional to 180,055.80, 248,479.56 and 99,485.10

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Solution

The fourth proportional to 180,055.80, 248,479.56 and 99,485.10 is: 137,290.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,055.80 : 248,479.56 = 99,485.10 : x
  2. Step 2: Convert to fraction form
    180,055.80/248,479.56 = 99,485.10/x
  3. Step 3: Cross multiply
    180,055.80x = 248,479.56 × 99,485.10
  4. Step 4: Simplify right side
    180,055.80x = 24,720,013,874.56
  5. Step 5: Solve for x
    x = 24,720,013,874.56/180,055.80
  6. Step 6: Final answer
    x = 137,290.85

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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.