Home / 103,435.46-142,749.24-60,428.78

Finding the Fourth Proportional to 103,435.46, 142,749.24 and 60,428.78

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Solution

The fourth proportional to 103,435.46, 142,749.24 and 60,428.78 is: 83,396.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,435.46 : 142,749.24 = 60,428.78 : x
  2. Step 2: Convert to fraction form
    103,435.46/142,749.24 = 60,428.78/x
  3. Step 3: Cross multiply
    103,435.46x = 142,749.24 × 60,428.78
  4. Step 4: Simplify right side
    103,435.46x = 8,626,162,419.13
  5. Step 5: Solve for x
    x = 8,626,162,419.13/103,435.46
  6. Step 6: Final answer
    x = 83,396.57

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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.