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Finding the Fourth Proportional to 103,955.81, 143,458.82 and 58,633.65

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Solution

The fourth proportional to 103,955.81, 143,458.82 and 58,633.65 is: 80,914.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,955.81 : 143,458.82 = 58,633.65 : x
  2. Step 2: Convert to fraction form
    103,955.81/143,458.82 = 58,633.65/x
  3. Step 3: Cross multiply
    103,955.81x = 143,458.82 × 58,633.65
  4. Step 4: Simplify right side
    103,955.81x = 8,411,514,241.29
  5. Step 5: Solve for x
    x = 8,411,514,241.29/103,955.81
  6. Step 6: Final answer
    x = 80,914.33

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1.5x scale

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.