Home / 109,255.70-163,883.55-86,705.30

Finding the Fourth Proportional to 109,255.70, 163,883.55 and 86,705.30

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Solution

The fourth proportional to 109,255.70, 163,883.55 and 86,705.30 is: 130,057.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,255.70 : 163,883.55 = 86,705.30 : x
  2. Step 2: Convert to fraction form
    109,255.70/163,883.55 = 86,705.30/x
  3. Step 3: Cross multiply
    109,255.70x = 163,883.55 × 86,705.30
  4. Step 4: Simplify right side
    109,255.70x = 14,209,572,367.82
  5. Step 5: Solve for x
    x = 14,209,572,367.82/109,255.70
  6. Step 6: Final answer
    x = 130,057.95

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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.