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Finding the Fourth Proportional to 104,256.59, 143,870.60 and 61,789.91

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Solution

The fourth proportional to 104,256.59, 143,870.60 and 61,789.91 is: 85,268.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,256.59 : 143,870.60 = 61,789.91 : x
  2. Step 2: Convert to fraction form
    104,256.59/143,870.60 = 61,789.91/x
  3. Step 3: Cross multiply
    104,256.59x = 143,870.60 × 61,789.91
  4. Step 4: Simplify right side
    104,256.59x = 8,889,751,116.70
  5. Step 5: Solve for x
    x = 8,889,751,116.70/104,256.59
  6. Step 6: Final answer
    x = 85,268.00

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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.