Home / 136,475.16-188,336.10-79,125.60

Finding the Fourth Proportional to 136,475.16, 188,336.10 and 79,125.60

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Solution

The fourth proportional to 136,475.16, 188,336.10 and 79,125.60 is: 109,193.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,475.16 : 188,336.10 = 79,125.60 : x
  2. Step 2: Convert to fraction form
    136,475.16/188,336.10 = 79,125.60/x
  3. Step 3: Cross multiply
    136,475.16x = 188,336.10 × 79,125.60
  4. Step 4: Simplify right side
    136,475.16x = 14,902,206,914.16
  5. Step 5: Solve for x
    x = 14,902,206,914.16/136,475.16
  6. Step 6: Final answer
    x = 109,193.55

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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.