Home / 128,364.81-192,476.04-52,516.59

Finding the Fourth Proportional to 128,364.81, 192,476.04 and 52,516.59

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Solution

The fourth proportional to 128,364.81, 192,476.04 and 52,516.59 is: 78,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,364.81 : 192,476.04 = 52,516.59 : x
  2. Step 2: Convert to fraction form
    128,364.81/192,476.04 = 52,516.59/x
  3. Step 3: Cross multiply
    128,364.81x = 192,476.04 × 52,516.59
  4. Step 4: Simplify right side
    128,364.81x = 10,108,185,277.50
  5. Step 5: Solve for x
    x = 10,108,185,277.50/128,364.81
  6. Step 6: Final answer
    x = 78,745.77

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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.