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Finding the Fourth Proportional to 131,766.84, 197,402.27 and 65,128.95

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Solution

The fourth proportional to 131,766.84, 197,402.27 and 65,128.95 is: 97,570.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,766.84 : 197,402.27 = 65,128.95 : x
  2. Step 2: Convert to fraction form
    131,766.84/197,402.27 = 65,128.95/x
  3. Step 3: Cross multiply
    131,766.84x = 197,402.27 × 65,128.95
  4. Step 4: Simplify right side
    131,766.84x = 12,856,602,247.07
  5. Step 5: Solve for x
    x = 12,856,602,247.07/131,766.84
  6. Step 6: Final answer
    x = 97,570.85

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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.