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Finding the Fourth Proportional to 104,804.70, 157,913.22 and 86,494.85

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Solution

The fourth proportional to 104,804.70, 157,913.22 and 86,494.85 is: 130,325.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,804.70 : 157,913.22 = 86,494.85 : x
  2. Step 2: Convert to fraction form
    104,804.70/157,913.22 = 86,494.85/x
  3. Step 3: Cross multiply
    104,804.70x = 157,913.22 × 86,494.85
  4. Step 4: Simplify right side
    104,804.70x = 13,658,681,048.88
  5. Step 5: Solve for x
    x = 13,658,681,048.88/104,804.70
  6. Step 6: Final answer
    x = 130,325.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.