Home / 107,115.42-159,715.48-104,172.78

Finding the Fourth Proportional to 107,115.42, 159,715.48 and 104,172.78

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Solution

The fourth proportional to 107,115.42, 159,715.48 and 104,172.78 is: 155,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,115.42 : 159,715.48 = 104,172.78 : x
  2. Step 2: Convert to fraction form
    107,115.42/159,715.48 = 104,172.78/x
  3. Step 3: Cross multiply
    107,115.42x = 159,715.48 × 104,172.78
  4. Step 4: Simplify right side
    107,115.42x = 16,638,005,560.63
  5. Step 5: Solve for x
    x = 16,638,005,560.63/107,115.42
  6. Step 6: Final answer
    x = 155,327.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.