Home / 197,780.78-272,938.78-107,136.74

Finding the Fourth Proportional to 197,780.78, 272,938.78 and 107,136.74

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Solution

The fourth proportional to 197,780.78, 272,938.78 and 107,136.74 is: 147,849.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,780.78 : 272,938.78 = 107,136.74 : x
  2. Step 2: Convert to fraction form
    197,780.78/272,938.78 = 107,136.74/x
  3. Step 3: Cross multiply
    197,780.78x = 272,938.78 × 107,136.74
  4. Step 4: Simplify right side
    197,780.78x = 29,241,771,108.78
  5. Step 5: Solve for x
    x = 29,241,771,108.78/197,780.78
  6. Step 6: Final answer
    x = 147,849.41

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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.