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Finding the Fourth Proportional to 119,779.48, 165,289.57 and 68,756.77

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Solution

The fourth proportional to 119,779.48, 165,289.57 and 68,756.77 is: 94,880.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,779.48 : 165,289.57 = 68,756.77 : x
  2. Step 2: Convert to fraction form
    119,779.48/165,289.57 = 68,756.77/x
  3. Step 3: Cross multiply
    119,779.48x = 165,289.57 × 68,756.77
  4. Step 4: Simplify right side
    119,779.48x = 11,364,776,947.89
  5. Step 5: Solve for x
    x = 11,364,776,947.89/119,779.48
  6. Step 6: Final answer
    x = 94,880.83

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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.