Home / 136,434.96-188,280.54-79,085.34

Finding the Fourth Proportional to 136,434.96, 188,280.54 and 79,085.34

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Solution

The fourth proportional to 136,434.96, 188,280.54 and 79,085.34 is: 109,137.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,434.96 : 188,280.54 = 79,085.34 : x
  2. Step 2: Convert to fraction form
    136,434.96/188,280.54 = 79,085.34/x
  3. Step 3: Cross multiply
    136,434.96x = 188,280.54 × 79,085.34
  4. Step 4: Simplify right side
    136,434.96x = 14,890,230,521.28
  5. Step 5: Solve for x
    x = 14,890,230,521.28/136,434.96
  6. Step 6: Final answer
    x = 109,137.94

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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.