Home / 103,239.68-154,851.01-73,129.55

Finding the Fourth Proportional to 103,239.68, 154,851.01 and 73,129.55

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Solution

The fourth proportional to 103,239.68, 154,851.01 and 73,129.55 is: 109,688.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,239.68 : 154,851.01 = 73,129.55 : x
  2. Step 2: Convert to fraction form
    103,239.68/154,851.01 = 73,129.55/x
  3. Step 3: Cross multiply
    103,239.68x = 154,851.01 × 73,129.55
  4. Step 4: Simplify right side
    103,239.68x = 11,324,184,678.35
  5. Step 5: Solve for x
    x = 11,324,184,678.35/103,239.68
  6. Step 6: Final answer
    x = 109,688.30

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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.