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Finding the Fourth Proportional to 104,559.69, 156,823.05 and 86,903.73

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Solution

The fourth proportional to 104,559.69, 156,823.05 and 86,903.73 is: 130,341.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,559.69 : 156,823.05 = 86,903.73 : x
  2. Step 2: Convert to fraction form
    104,559.69/156,823.05 = 86,903.73/x
  3. Step 3: Cross multiply
    104,559.69x = 156,823.05 × 86,903.73
  4. Step 4: Simplify right side
    104,559.69x = 13,628,507,994.98
  5. Step 5: Solve for x
    x = 13,628,507,994.98/104,559.69
  6. Step 6: Final answer
    x = 130,341.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.