Home / 136,927.80-205,391.70-126,430.20

Finding the Fourth Proportional to 136,927.80, 205,391.70 and 126,430.20

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Solution

The fourth proportional to 136,927.80, 205,391.70 and 126,430.20 is: 189,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,927.80 : 205,391.70 = 126,430.20 : x
  2. Step 2: Convert to fraction form
    136,927.80/205,391.70 = 126,430.20/x
  3. Step 3: Cross multiply
    136,927.80x = 205,391.70 × 126,430.20
  4. Step 4: Simplify right side
    136,927.80x = 25,967,713,709.34
  5. Step 5: Solve for x
    x = 25,967,713,709.34/136,927.80
  6. Step 6: Final answer
    x = 189,645.30

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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.