Home / 117,589.19-162,172.53-79,342.20

Finding the Fourth Proportional to 117,589.19, 162,172.53 and 79,342.20

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Solution

The fourth proportional to 117,589.19, 162,172.53 and 79,342.20 is: 109,424.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,589.19 : 162,172.53 = 79,342.20 : x
  2. Step 2: Convert to fraction form
    117,589.19/162,172.53 = 79,342.20/x
  3. Step 3: Cross multiply
    117,589.19x = 162,172.53 × 79,342.20
  4. Step 4: Simplify right side
    117,589.19x = 12,867,125,309.77
  5. Step 5: Solve for x
    x = 12,867,125,309.77/117,589.19
  6. Step 6: Final answer
    x = 109,424.39

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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.