Home / 139,975.81-193,169.63-76,314.04

Finding the Fourth Proportional to 139,975.81, 193,169.63 and 76,314.04

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Solution

The fourth proportional to 139,975.81, 193,169.63 and 76,314.04 is: 105,315.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,975.81 : 193,169.63 = 76,314.04 : x
  2. Step 2: Convert to fraction form
    139,975.81/193,169.63 = 76,314.04/x
  3. Step 3: Cross multiply
    139,975.81x = 193,169.63 × 76,314.04
  4. Step 4: Simplify right side
    139,975.81x = 14,741,554,870.61
  5. Step 5: Solve for x
    x = 14,741,554,870.61/139,975.81
  6. Step 6: Final answer
    x = 105,315.02

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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.