Home / 118,355.24-163,323.78-64,639.40

Finding the Fourth Proportional to 118,355.24, 163,323.78 and 64,639.40

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Solution

The fourth proportional to 118,355.24, 163,323.78 and 64,639.40 is: 89,198.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,355.24 : 163,323.78 = 64,639.40 : x
  2. Step 2: Convert to fraction form
    118,355.24/163,323.78 = 64,639.40/x
  3. Step 3: Cross multiply
    118,355.24x = 163,323.78 × 64,639.40
  4. Step 4: Simplify right side
    118,355.24x = 10,557,151,144.93
  5. Step 5: Solve for x
    x = 10,557,151,144.93/118,355.24
  6. Step 6: Final answer
    x = 89,198.85

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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.