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Finding the Fourth Proportional to 130,069.71, 179,443.08 and 103,104

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Solution

The fourth proportional to 130,069.71, 179,443.08 and 103,104 is: 142,241.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,069.71 : 179,443.08 = 103,104 : x
  2. Step 2: Convert to fraction form
    130,069.71/179,443.08 = 103,104/x
  3. Step 3: Cross multiply
    130,069.71x = 179,443.08 × 103,104
  4. Step 4: Simplify right side
    130,069.71x = 18,501,299,320.32
  5. Step 5: Solve for x
    x = 18,501,299,320.32/130,069.71
  6. Step 6: Final answer
    x = 142,241.41

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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.