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Finding the Fourth Proportional to 118,683.69, 163,779.40 and 67,712.92

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Solution

The fourth proportional to 118,683.69, 163,779.40 and 67,712.92 is: 93,441.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,683.69 : 163,779.40 = 67,712.92 : x
  2. Step 2: Convert to fraction form
    118,683.69/163,779.40 = 67,712.92/x
  3. Step 3: Cross multiply
    118,683.69x = 163,779.40 × 67,712.92
  4. Step 4: Simplify right side
    118,683.69x = 11,089,981,409.85
  5. Step 5: Solve for x
    x = 11,089,981,409.85/118,683.69
  6. Step 6: Final answer
    x = 93,441.49

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1.5x scale

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.