Home / 145,523.40-217,847.70-86,328.60

Finding the Fourth Proportional to 145,523.40, 217,847.70 and 86,328.60

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Solution

The fourth proportional to 145,523.40, 217,847.70 and 86,328.60 is: 129,233.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,523.40 : 217,847.70 = 86,328.60 : x
  2. Step 2: Convert to fraction form
    145,523.40/217,847.70 = 86,328.60/x
  3. Step 3: Cross multiply
    145,523.40x = 217,847.70 × 86,328.60
  4. Step 4: Simplify right side
    145,523.40x = 18,806,486,954.22
  5. Step 5: Solve for x
    x = 18,806,486,954.22/145,523.40
  6. Step 6: Final answer
    x = 129,233.42

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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.