Home / 157,927.68-217,940.76-86,307.68

Finding the Fourth Proportional to 157,927.68, 217,940.76 and 86,307.68

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Solution

The fourth proportional to 157,927.68, 217,940.76 and 86,307.68 is: 119,104.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,927.68 : 217,940.76 = 86,307.68 : x
  2. Step 2: Convert to fraction form
    157,927.68/217,940.76 = 86,307.68/x
  3. Step 3: Cross multiply
    157,927.68x = 217,940.76 × 86,307.68
  4. Step 4: Simplify right side
    157,927.68x = 18,809,961,917.89
  5. Step 5: Solve for x
    x = 18,809,961,917.89/157,927.68
  6. Step 6: Final answer
    x = 119,104.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.