Home / 105,681.65-145,840.64-57,933.97

Finding the Fourth Proportional to 105,681.65, 145,840.64 and 57,933.97

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Solution

The fourth proportional to 105,681.65, 145,840.64 and 57,933.97 is: 79,948.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,681.65 : 145,840.64 = 57,933.97 : x
  2. Step 2: Convert to fraction form
    105,681.65/145,840.64 = 57,933.97/x
  3. Step 3: Cross multiply
    105,681.65x = 145,840.64 × 57,933.97
  4. Step 4: Simplify right side
    105,681.65x = 8,449,126,608.27
  5. Step 5: Solve for x
    x = 8,449,126,608.27/105,681.65
  6. Step 6: Final answer
    x = 79,948.86

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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.