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Finding the Fourth Proportional to 173,661.80, 260,055.30 and 138,669.80

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Solution

The fourth proportional to 173,661.80, 260,055.30 and 138,669.80 is: 207,655.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,661.80 : 260,055.30 = 138,669.80 : x
  2. Step 2: Convert to fraction form
    173,661.80/260,055.30 = 138,669.80/x
  3. Step 3: Cross multiply
    173,661.80x = 260,055.30 × 138,669.80
  4. Step 4: Simplify right side
    173,661.80x = 36,061,816,439.94
  5. Step 5: Solve for x
    x = 36,061,816,439.94/173,661.80
  6. Step 6: Final answer
    x = 207,655.43

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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.