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Finding the Fourth Proportional to 125,075.56, 172,602.56 and 68,486.94

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Solution

The fourth proportional to 125,075.56, 172,602.56 and 68,486.94 is: 94,511.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,075.56 : 172,602.56 = 68,486.94 : x
  2. Step 2: Convert to fraction form
    125,075.56/172,602.56 = 68,486.94/x
  3. Step 3: Cross multiply
    125,075.56x = 172,602.56 × 68,486.94
  4. Step 4: Simplify right side
    125,075.56x = 11,821,021,170.57
  5. Step 5: Solve for x
    x = 11,821,021,170.57/125,075.56
  6. Step 6: Final answer
    x = 94,511.04

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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.