Home / 118,635.12-163,705.32-80,316.72

Finding the Fourth Proportional to 118,635.12, 163,705.32 and 80,316.72

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Solution

The fourth proportional to 118,635.12, 163,705.32 and 80,316.72 is: 110,829.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,635.12 : 163,705.32 = 80,316.72 : x
  2. Step 2: Convert to fraction form
    118,635.12/163,705.32 = 80,316.72/x
  3. Step 3: Cross multiply
    118,635.12x = 163,705.32 × 80,316.72
  4. Step 4: Simplify right side
    118,635.12x = 13,148,274,348.95
  5. Step 5: Solve for x
    x = 13,148,274,348.95/118,635.12
  6. Step 6: Final answer
    x = 110,829.53

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1.5x scale

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.