Home / 255,664.04-383,513.88-78,157.40

Finding the Fourth Proportional to 255,664.04, 383,513.88 and 78,157.40

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Solution

The fourth proportional to 255,664.04, 383,513.88 and 78,157.40 is: 117,241.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,664.04 : 383,513.88 = 78,157.40 : x
  2. Step 2: Convert to fraction form
    255,664.04/383,513.88 = 78,157.40/x
  3. Step 3: Cross multiply
    255,664.04x = 383,513.88 × 78,157.40
  4. Step 4: Simplify right side
    255,664.04x = 29,974,447,724.71
  5. Step 5: Solve for x
    x = 29,974,447,724.71/255,664.04
  6. Step 6: Final answer
    x = 117,241.55

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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.