Home / 201,787.04-278,468-111,143.34

Finding the Fourth Proportional to 201,787.04, 278,468 and 111,143.34

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Solution

The fourth proportional to 201,787.04, 278,468 and 111,143.34 is: 153,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,787.04 : 278,468 = 111,143.34 : x
  2. Step 2: Convert to fraction form
    201,787.04/278,468 = 111,143.34/x
  3. Step 3: Cross multiply
    201,787.04x = 278,468 × 111,143.34
  4. Step 4: Simplify right side
    201,787.04x = 30,949,863,603.12
  5. Step 5: Solve for x
    x = 30,949,863,603.12/201,787.04
  6. Step 6: Final answer
    x = 153,378.85

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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.