Home / 94,903.11-130,986.32-78,972.03

Finding the Fourth Proportional to 94,903.11, 130,986.32 and 78,972.03

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Solution

The fourth proportional to 94,903.11, 130,986.32 and 78,972.03 is: 108,998.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,903.11 : 130,986.32 = 78,972.03 : x
  2. Step 2: Convert to fraction form
    94,903.11/130,986.32 = 78,972.03/x
  3. Step 3: Cross multiply
    94,903.11x = 130,986.32 × 78,972.03
  4. Step 4: Simplify right side
    94,903.11x = 10,344,255,197.77
  5. Step 5: Solve for x
    x = 10,344,255,197.77/94,903.11
  6. Step 6: Final answer
    x = 108,998.06

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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.