Home / 136,400.18-188,232.81-79,800.62

Finding the Fourth Proportional to 136,400.18, 188,232.81 and 79,800.62

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Solution

The fourth proportional to 136,400.18, 188,232.81 and 79,800.62 is: 110,125.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,400.18 : 188,232.81 = 79,800.62 : x
  2. Step 2: Convert to fraction form
    136,400.18/188,232.81 = 79,800.62/x
  3. Step 3: Cross multiply
    136,400.18x = 188,232.81 × 79,800.62
  4. Step 4: Simplify right side
    136,400.18x = 15,021,094,942.34
  5. Step 5: Solve for x
    x = 15,021,094,942.34/136,400.18
  6. Step 6: Final answer
    x = 110,125.18

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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.