Home / 128,325.80-192,521.46-53,421.04

Finding the Fourth Proportional to 128,325.80, 192,521.46 and 53,421.04

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Solution

The fourth proportional to 128,325.80, 192,521.46 and 53,421.04 is: 80,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,325.80 : 192,521.46 = 53,421.04 : x
  2. Step 2: Convert to fraction form
    128,325.80/192,521.46 = 53,421.04/x
  3. Step 3: Cross multiply
    128,325.80x = 192,521.46 × 53,421.04
  4. Step 4: Simplify right side
    128,325.80x = 10,284,696,615.52
  5. Step 5: Solve for x
    x = 10,284,696,615.52/128,325.80
  6. Step 6: Final answer
    x = 80,145.20

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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.