Home / 128,424.50-192,554.73-61,731.93

Finding the Fourth Proportional to 128,424.50, 192,554.73 and 61,731.93

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Solution

The fourth proportional to 128,424.50, 192,554.73 and 61,731.93 is: 92,558.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,424.50 : 192,554.73 = 61,731.93 : x
  2. Step 2: Convert to fraction form
    128,424.50/192,554.73 = 61,731.93/x
  3. Step 3: Cross multiply
    128,424.50x = 192,554.73 × 61,731.93
  4. Step 4: Simplify right side
    128,424.50x = 11,886,775,113.53
  5. Step 5: Solve for x
    x = 11,886,775,113.53/128,424.50
  6. Step 6: Final answer
    x = 92,558.47

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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.