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Finding the Fourth Proportional to 136,670.80, 205,006.20 and 132,078.10

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Solution

The fourth proportional to 136,670.80, 205,006.20 and 132,078.10 is: 198,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,670.80 : 205,006.20 = 132,078.10 : x
  2. Step 2: Convert to fraction form
    136,670.80/205,006.20 = 132,078.10/x
  3. Step 3: Cross multiply
    136,670.80x = 205,006.20 × 132,078.10
  4. Step 4: Simplify right side
    136,670.80x = 27,076,829,384.22
  5. Step 5: Solve for x
    x = 27,076,829,384.22/136,670.80
  6. Step 6: Final answer
    x = 198,117.15

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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.