Home / 103,944.80-155,669.64-66,388.52

Finding the Fourth Proportional to 103,944.80, 155,669.64 and 66,388.52

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Solution

The fourth proportional to 103,944.80, 155,669.64 and 66,388.52 is: 99,424.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,944.80 : 155,669.64 = 66,388.52 : x
  2. Step 2: Convert to fraction form
    103,944.80/155,669.64 = 66,388.52/x
  3. Step 3: Cross multiply
    103,944.80x = 155,669.64 × 66,388.52
  4. Step 4: Simplify right side
    103,944.80x = 10,334,677,008.53
  5. Step 5: Solve for x
    x = 10,334,677,008.53/103,944.80
  6. Step 6: Final answer
    x = 99,424.67

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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.