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Finding the Fourth Proportional to 134,597.87, 185,745.08 and 78,042.05

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Solution

The fourth proportional to 134,597.87, 185,745.08 and 78,042.05 is: 107,698.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,597.87 : 185,745.08 = 78,042.05 : x
  2. Step 2: Convert to fraction form
    134,597.87/185,745.08 = 78,042.05/x
  3. Step 3: Cross multiply
    134,597.87x = 185,745.08 × 78,042.05
  4. Step 4: Simplify right side
    134,597.87x = 14,495,927,284.98
  5. Step 5: Solve for x
    x = 14,495,927,284.98/134,597.87
  6. Step 6: Final answer
    x = 107,698.04

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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.