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Finding the Fourth Proportional to 136,271.80, 204,116.10 and 121,497.40

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Solution

The fourth proportional to 136,271.80, 204,116.10 and 121,497.40 is: 181,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,271.80 : 204,116.10 = 121,497.40 : x
  2. Step 2: Convert to fraction form
    136,271.80/204,116.10 = 121,497.40/x
  3. Step 3: Cross multiply
    136,271.80x = 204,116.10 × 121,497.40
  4. Step 4: Simplify right side
    136,271.80x = 24,799,575,448.14
  5. Step 5: Solve for x
    x = 24,799,575,448.14/136,271.80
  6. Step 6: Final answer
    x = 181,986.11

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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.