Home / 105,439.60-158,078.40-52,886.80

Finding the Fourth Proportional to 105,439.60, 158,078.40 and 52,886.80

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Solution

The fourth proportional to 105,439.60, 158,078.40 and 52,886.80 is: 79,289.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,439.60 : 158,078.40 = 52,886.80 : x
  2. Step 2: Convert to fraction form
    105,439.60/158,078.40 = 52,886.80/x
  3. Step 3: Cross multiply
    105,439.60x = 158,078.40 × 52,886.80
  4. Step 4: Simplify right side
    105,439.60x = 8,360,260,725.12
  5. Step 5: Solve for x
    x = 8,360,260,725.12/105,439.60
  6. Step 6: Final answer
    x = 79,289.57

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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.