Home / 89,028.40-133,696.20-86,263.60

Finding the Fourth Proportional to 89,028.40, 133,696.20 and 86,263.60

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Solution

The fourth proportional to 89,028.40, 133,696.20 and 86,263.60 is: 129,544.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,028.40 : 133,696.20 = 86,263.60 : x
  2. Step 2: Convert to fraction form
    89,028.40/133,696.20 = 86,263.60/x
  3. Step 3: Cross multiply
    89,028.40x = 133,696.20 × 86,263.60
  4. Step 4: Simplify right side
    89,028.40x = 11,533,115,518.32
  5. Step 5: Solve for x
    x = 11,533,115,518.32/89,028.40
  6. Step 6: Final answer
    x = 129,544.23

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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.