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Finding the Fourth Proportional to 125,033.63, 172,546.47 and 68,445

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Solution

The fourth proportional to 125,033.63, 172,546.47 and 68,445 is: 94,454.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,033.63 : 172,546.47 = 68,445 : x
  2. Step 2: Convert to fraction form
    125,033.63/172,546.47 = 68,445/x
  3. Step 3: Cross multiply
    125,033.63x = 172,546.47 × 68,445
  4. Step 4: Simplify right side
    125,033.63x = 11,809,943,139.15
  5. Step 5: Solve for x
    x = 11,809,943,139.15/125,033.63
  6. Step 6: Final answer
    x = 94,454.14

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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.