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Finding the Fourth Proportional to 122,830.72, 183,950.80 and 70,080.28

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Solution

The fourth proportional to 122,830.72, 183,950.80 and 70,080.28 is: 104,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,830.72 : 183,950.80 = 70,080.28 : x
  2. Step 2: Convert to fraction form
    122,830.72/183,950.80 = 70,080.28/x
  3. Step 3: Cross multiply
    122,830.72x = 183,950.80 × 70,080.28
  4. Step 4: Simplify right side
    122,830.72x = 12,891,323,570.22
  5. Step 5: Solve for x
    x = 12,891,323,570.22/122,830.72
  6. Step 6: Final answer
    x = 104,951.95

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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.