Home / 109,078.56-163,649.16-90,271.44

Finding the Fourth Proportional to 109,078.56, 163,649.16 and 90,271.44

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Solution

The fourth proportional to 109,078.56, 163,649.16 and 90,271.44 is: 135,433.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,078.56 : 163,649.16 = 90,271.44 : x
  2. Step 2: Convert to fraction form
    109,078.56/163,649.16 = 90,271.44/x
  3. Step 3: Cross multiply
    109,078.56x = 163,649.16 × 90,271.44
  4. Step 4: Simplify right side
    109,078.56x = 14,772,845,327.99
  5. Step 5: Solve for x
    x = 14,772,845,327.99/109,078.56
  6. Step 6: Final answer
    x = 135,433.08

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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.