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Finding the Fourth Proportional to 173,893.40, 260,840.10 and 68,658.20

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Solution

The fourth proportional to 173,893.40, 260,840.10 and 68,658.20 is: 102,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,893.40 : 260,840.10 = 68,658.20 : x
  2. Step 2: Convert to fraction form
    173,893.40/260,840.10 = 68,658.20/x
  3. Step 3: Cross multiply
    173,893.40x = 260,840.10 × 68,658.20
  4. Step 4: Simplify right side
    173,893.40x = 17,908,811,753.82
  5. Step 5: Solve for x
    x = 17,908,811,753.82/173,893.40
  6. Step 6: Final answer
    x = 102,987.30

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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.