Home / 128,369.80-192,587.60-53,465.04

Finding the Fourth Proportional to 128,369.80, 192,587.60 and 53,465.04

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Solution

The fourth proportional to 128,369.80, 192,587.60 and 53,465.04 is: 80,211.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,369.80 : 192,587.60 = 53,465.04 : x
  2. Step 2: Convert to fraction form
    128,369.80/192,587.60 = 53,465.04/x
  3. Step 3: Cross multiply
    128,369.80x = 192,587.60 × 53,465.04
  4. Step 4: Simplify right side
    128,369.80x = 10,296,703,737.50
  5. Step 5: Solve for x
    x = 10,296,703,737.50/128,369.80
  6. Step 6: Final answer
    x = 80,211.26

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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.