Home / 118,257.86-163,331.62-86,135.60

Finding the Fourth Proportional to 118,257.86, 163,331.62 and 86,135.60

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Solution

The fourth proportional to 118,257.86, 163,331.62 and 86,135.60 is: 118,966.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,257.86 : 163,331.62 = 86,135.60 : x
  2. Step 2: Convert to fraction form
    118,257.86/163,331.62 = 86,135.60/x
  3. Step 3: Cross multiply
    118,257.86x = 163,331.62 × 86,135.60
  4. Step 4: Simplify right side
    118,257.86x = 14,068,667,280.66
  5. Step 5: Solve for x
    x = 14,068,667,280.66/118,257.86
  6. Step 6: Final answer
    x = 118,966.02

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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.