Home / 103,856.00-143,331.39-61,428.20

Finding the Fourth Proportional to 103,856.00, 143,331.39 and 61,428.20

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Solution

The fourth proportional to 103,856.00, 143,331.39 and 61,428.20 is: 84,776.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,856.00 : 143,331.39 = 61,428.20 : x
  2. Step 2: Convert to fraction form
    103,856.00/143,331.39 = 61,428.20/x
  3. Step 3: Cross multiply
    103,856.00x = 143,331.39 × 61,428.20
  4. Step 4: Simplify right side
    103,856.00x = 8,804,588,574.54
  5. Step 5: Solve for x
    x = 8,804,588,574.54/103,856.00
  6. Step 6: Final answer
    x = 84,776.89

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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.