Home / 119,705.26-165,070.52-78,880.04

Finding the Fourth Proportional to 119,705.26, 165,070.52 and 78,880.04

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Solution

The fourth proportional to 119,705.26, 165,070.52 and 78,880.04 is: 108,773.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,705.26 : 165,070.52 = 78,880.04 : x
  2. Step 2: Convert to fraction form
    119,705.26/165,070.52 = 78,880.04/x
  3. Step 3: Cross multiply
    119,705.26x = 165,070.52 × 78,880.04
  4. Step 4: Simplify right side
    119,705.26x = 13,020,769,220.42
  5. Step 5: Solve for x
    x = 13,020,769,220.42/119,705.26
  6. Step 6: Final answer
    x = 108,773.58

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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.