Home / 197,815.75-272,985.80-107,172.34

Finding the Fourth Proportional to 197,815.75, 272,985.80 and 107,172.34

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Solution

The fourth proportional to 197,815.75, 272,985.80 and 107,172.34 is: 147,897.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,815.75 : 272,985.80 = 107,172.34 : x
  2. Step 2: Convert to fraction form
    197,815.75/272,985.80 = 107,172.34/x
  3. Step 3: Cross multiply
    197,815.75x = 272,985.80 × 107,172.34
  4. Step 4: Simplify right side
    197,815.75x = 29,256,525,754.45
  5. Step 5: Solve for x
    x = 29,256,525,754.45/197,815.75
  6. Step 6: Final answer
    x = 147,897.86

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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.