Home / 89,024.40-133,690.20-86,259.60

Finding the Fourth Proportional to 89,024.40, 133,690.20 and 86,259.60

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Solution

The fourth proportional to 89,024.40, 133,690.20 and 86,259.60 is: 129,538.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,024.40 : 133,690.20 = 86,259.60 : x
  2. Step 2: Convert to fraction form
    89,024.40/133,690.20 = 86,259.60/x
  3. Step 3: Cross multiply
    89,024.40x = 133,690.20 × 86,259.60
  4. Step 4: Simplify right side
    89,024.40x = 11,532,063,175.92
  5. Step 5: Solve for x
    x = 11,532,063,175.92/89,024.40
  6. Step 6: Final answer
    x = 129,538.23

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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.