Home / 120,931.72-180,483.05-117,782.44

Finding the Fourth Proportional to 120,931.72, 180,483.05 and 117,782.44

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Solution

The fourth proportional to 120,931.72, 180,483.05 and 117,782.44 is: 175,782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,931.72 : 180,483.05 = 117,782.44 : x
  2. Step 2: Convert to fraction form
    120,931.72/180,483.05 = 117,782.44/x
  3. Step 3: Cross multiply
    120,931.72x = 180,483.05 × 117,782.44
  4. Step 4: Simplify right side
    120,931.72x = 21,257,734,007.64
  5. Step 5: Solve for x
    x = 21,257,734,007.64/120,931.72
  6. Step 6: Final answer
    x = 175,782.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.