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Finding the Fourth Proportional to 125,094, 172,578.72 and 74,068.80

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Solution

The fourth proportional to 125,094, 172,578.72 and 74,068.80 is: 102,184.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,094 : 172,578.72 = 74,068.80 : x
  2. Step 2: Convert to fraction form
    125,094/172,578.72 = 74,068.80/x
  3. Step 3: Cross multiply
    125,094x = 172,578.72 × 74,068.80
  4. Step 4: Simplify right side
    125,094x = 12,782,698,695.94
  5. Step 5: Solve for x
    x = 12,782,698,695.94/125,094
  6. Step 6: Final answer
    x = 102,184.75

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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.