Home / 103,618.40-142,993.60-61,179.64

Finding the Fourth Proportional to 103,618.40, 142,993.60 and 61,179.64

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Solution

The fourth proportional to 103,618.40, 142,993.60 and 61,179.64 is: 84,428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.40 : 142,993.60 = 61,179.64 : x
  2. Step 2: Convert to fraction form
    103,618.40/142,993.60 = 61,179.64/x
  3. Step 3: Cross multiply
    103,618.40x = 142,993.60 × 61,179.64
  4. Step 4: Simplify right side
    103,618.40x = 8,748,296,970.30
  5. Step 5: Solve for x
    x = 8,748,296,970.30/103,618.40
  6. Step 6: Final answer
    x = 84,428.03

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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.