Home / 118,853.60-178,280.40-76,863.20

Finding the Fourth Proportional to 118,853.60, 178,280.40 and 76,863.20

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Solution

The fourth proportional to 118,853.60, 178,280.40 and 76,863.20 is: 115,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,853.60 : 178,280.40 = 76,863.20 : x
  2. Step 2: Convert to fraction form
    118,853.60/178,280.40 = 76,863.20/x
  3. Step 3: Cross multiply
    118,853.60x = 178,280.40 × 76,863.20
  4. Step 4: Simplify right side
    118,853.60x = 13,703,202,041.28
  5. Step 5: Solve for x
    x = 13,703,202,041.28/118,853.60
  6. Step 6: Final answer
    x = 115,294.80

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1.5x scale

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.