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Finding the Fourth Proportional to 129,959.76, 194,782.56 and 63,300

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Solution

The fourth proportional to 129,959.76, 194,782.56 and 63,300 is: 94,873.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,959.76 : 194,782.56 = 63,300 : x
  2. Step 2: Convert to fraction form
    129,959.76/194,782.56 = 63,300/x
  3. Step 3: Cross multiply
    129,959.76x = 194,782.56 × 63,300
  4. Step 4: Simplify right side
    129,959.76x = 12,329,736,048
  5. Step 5: Solve for x
    x = 12,329,736,048/129,959.76
  6. Step 6: Final answer
    x = 94,873.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.