Home / 209,603.16-289,166.90-129,006.36

Finding the Fourth Proportional to 209,603.16, 289,166.90 and 129,006.36

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Solution

The fourth proportional to 209,603.16, 289,166.90 and 129,006.36 is: 177,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,603.16 : 289,166.90 = 129,006.36 : x
  2. Step 2: Convert to fraction form
    209,603.16/289,166.90 = 129,006.36/x
  3. Step 3: Cross multiply
    209,603.16x = 289,166.90 × 129,006.36
  4. Step 4: Simplify right side
    209,603.16x = 37,304,369,201.48
  5. Step 5: Solve for x
    x = 37,304,369,201.48/209,603.16
  6. Step 6: Final answer
    x = 177,976.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.