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Finding the Fourth Proportional to 188,911.20, 282,710.70 and 129,862.20

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Solution

The fourth proportional to 188,911.20, 282,710.70 and 129,862.20 is: 194,342.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,911.20 : 282,710.70 = 129,862.20 : x
  2. Step 2: Convert to fraction form
    188,911.20/282,710.70 = 129,862.20/x
  3. Step 3: Cross multiply
    188,911.20x = 282,710.70 × 129,862.20
  4. Step 4: Simplify right side
    188,911.20x = 36,713,433,465.54
  5. Step 5: Solve for x
    x = 36,713,433,465.54/188,911.20
  6. Step 6: Final answer
    x = 194,342.28

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1.5x scale

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.