Home / 109,534.40-164,107.20-89,705.60

Finding the Fourth Proportional to 109,534.40, 164,107.20 and 89,705.60

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Solution

The fourth proportional to 109,534.40, 164,107.20 and 89,705.60 is: 134,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,534.40 : 164,107.20 = 89,705.60 : x
  2. Step 2: Convert to fraction form
    109,534.40/164,107.20 = 89,705.60/x
  3. Step 3: Cross multiply
    109,534.40x = 164,107.20 × 89,705.60
  4. Step 4: Simplify right side
    109,534.40x = 14,721,334,840.32
  5. Step 5: Solve for x
    x = 14,721,334,840.32/109,534.40
  6. Step 6: Final answer
    x = 134,399.19

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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.