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Finding the Fourth Proportional to 180,235.80, 248,722.79 and 99,661.55

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Solution

The fourth proportional to 180,235.80, 248,722.79 and 99,661.55 is: 137,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,235.80 : 248,722.79 = 99,661.55 : x
  2. Step 2: Convert to fraction form
    180,235.80/248,722.79 = 99,661.55/x
  3. Step 3: Cross multiply
    180,235.80x = 248,722.79 × 99,661.55
  4. Step 4: Simplify right side
    180,235.80x = 24,788,097,029.80
  5. Step 5: Solve for x
    x = 24,788,097,029.80/180,235.80
  6. Step 6: Final answer
    x = 137,531.48

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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.