Home / 145,532.40-217,861.20-86,337.60

Finding the Fourth Proportional to 145,532.40, 217,861.20 and 86,337.60

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Solution

The fourth proportional to 145,532.40, 217,861.20 and 86,337.60 is: 129,246.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,532.40 : 217,861.20 = 86,337.60 : x
  2. Step 2: Convert to fraction form
    145,532.40/217,861.20 = 86,337.60/x
  3. Step 3: Cross multiply
    145,532.40x = 217,861.20 × 86,337.60
  4. Step 4: Simplify right side
    145,532.40x = 18,809,613,141.12
  5. Step 5: Solve for x
    x = 18,809,613,141.12/145,532.40
  6. Step 6: Final answer
    x = 129,246.91

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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.