Home / 118,827.60-178,279.80-79,429.20

Finding the Fourth Proportional to 118,827.60, 178,279.80 and 79,429.20

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Solution

The fourth proportional to 118,827.60, 178,279.80 and 79,429.20 is: 119,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,827.60 : 178,279.80 = 79,429.20 : x
  2. Step 2: Convert to fraction form
    118,827.60/178,279.80 = 79,429.20/x
  3. Step 3: Cross multiply
    118,827.60x = 178,279.80 × 79,429.20
  4. Step 4: Simplify right side
    118,827.60x = 14,160,621,890.16
  5. Step 5: Solve for x
    x = 14,160,621,890.16/118,827.60
  6. Step 6: Final answer
    x = 119,169.47

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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.