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Finding the Fourth Proportional to 126,800.64, 174,985.11 and 68,658.03

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Solution

The fourth proportional to 126,800.64, 174,985.11 and 68,658.03 is: 94,748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,800.64 : 174,985.11 = 68,658.03 : x
  2. Step 2: Convert to fraction form
    126,800.64/174,985.11 = 68,658.03/x
  3. Step 3: Cross multiply
    126,800.64x = 174,985.11 × 68,658.03
  4. Step 4: Simplify right side
    126,800.64x = 12,014,132,931.93
  5. Step 5: Solve for x
    x = 12,014,132,931.93/126,800.64
  6. Step 6: Final answer
    x = 94,748.20

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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.