Home / 105,227.93-145,212.19-57,481.47

Finding the Fourth Proportional to 105,227.93, 145,212.19 and 57,481.47

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Solution

The fourth proportional to 105,227.93, 145,212.19 and 57,481.47 is: 79,323.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,227.93 : 145,212.19 = 57,481.47 : x
  2. Step 2: Convert to fraction form
    105,227.93/145,212.19 = 57,481.47/x
  3. Step 3: Cross multiply
    105,227.93x = 145,212.19 × 57,481.47
  4. Step 4: Simplify right side
    105,227.93x = 8,347,009,999.42
  5. Step 5: Solve for x
    x = 8,347,009,999.42/105,227.93
  6. Step 6: Final answer
    x = 79,323.14

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1.5x scale

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.