Home / 103,639.56-143,017.14-61,182.60

Finding the Fourth Proportional to 103,639.56, 143,017.14 and 61,182.60

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Solution

The fourth proportional to 103,639.56, 143,017.14 and 61,182.60 is: 84,428.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.56 : 143,017.14 = 61,182.60 : x
  2. Step 2: Convert to fraction form
    103,639.56/143,017.14 = 61,182.60/x
  3. Step 3: Cross multiply
    103,639.56x = 143,017.14 × 61,182.60
  4. Step 4: Simplify right side
    103,639.56x = 8,750,160,469.76
  5. Step 5: Solve for x
    x = 8,750,160,469.76/103,639.56
  6. Step 6: Final answer
    x = 84,428.77

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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.