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Finding the Fourth Proportional to 133,328.30, 200,101.80 and 128,954.30

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Solution

The fourth proportional to 133,328.30, 200,101.80 and 128,954.30 is: 193,537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,328.30 : 200,101.80 = 128,954.30 : x
  2. Step 2: Convert to fraction form
    133,328.30/200,101.80 = 128,954.30/x
  3. Step 3: Cross multiply
    133,328.30x = 200,101.80 × 128,954.30
  4. Step 4: Simplify right side
    133,328.30x = 25,803,987,547.74
  5. Step 5: Solve for x
    x = 25,803,987,547.74/133,328.30
  6. Step 6: Final answer
    x = 193,537.21

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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.