Home / 118,454.56-163,513.38-80,195.40

Finding the Fourth Proportional to 118,454.56, 163,513.38 and 80,195.40

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Solution

The fourth proportional to 118,454.56, 163,513.38 and 80,195.40 is: 110,700.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,454.56 : 163,513.38 = 80,195.40 : x
  2. Step 2: Convert to fraction form
    118,454.56/163,513.38 = 80,195.40/x
  3. Step 3: Cross multiply
    118,454.56x = 163,513.38 × 80,195.40
  4. Step 4: Simplify right side
    118,454.56x = 13,113,020,914.45
  5. Step 5: Solve for x
    x = 13,113,020,914.45/118,454.56
  6. Step 6: Final answer
    x = 110,700.85

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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.