Home / 108,840.20-163,260.30-90,408.20

Finding the Fourth Proportional to 108,840.20, 163,260.30 and 90,408.20

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Solution

The fourth proportional to 108,840.20, 163,260.30 and 90,408.20 is: 135,612.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,840.20 : 163,260.30 = 90,408.20 : x
  2. Step 2: Convert to fraction form
    108,840.20/163,260.30 = 90,408.20/x
  3. Step 3: Cross multiply
    108,840.20x = 163,260.30 × 90,408.20
  4. Step 4: Simplify right side
    108,840.20x = 14,760,069,854.46
  5. Step 5: Solve for x
    x = 14,760,069,854.46/108,840.20
  6. Step 6: Final answer
    x = 135,612.30

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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.