Home / 128,281.08-192,317.92-53,457.60

Finding the Fourth Proportional to 128,281.08, 192,317.92 and 53,457.60

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Solution

The fourth proportional to 128,281.08, 192,317.92 and 53,457.60 is: 80,143.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,281.08 : 192,317.92 = 53,457.60 : x
  2. Step 2: Convert to fraction form
    128,281.08/192,317.92 = 53,457.60/x
  3. Step 3: Cross multiply
    128,281.08x = 192,317.92 × 53,457.60
  4. Step 4: Simplify right side
    128,281.08x = 10,280,854,440.19
  5. Step 5: Solve for x
    x = 10,280,854,440.19/128,281.08
  6. Step 6: Final answer
    x = 80,143.19

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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.