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Finding the Fourth Proportional to 190,053.60, 285,070.08 and 71,722.08

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Solution

The fourth proportional to 190,053.60, 285,070.08 and 71,722.08 is: 107,579.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,053.60 : 285,070.08 = 71,722.08 : x
  2. Step 2: Convert to fraction form
    190,053.60/285,070.08 = 71,722.08/x
  3. Step 3: Cross multiply
    190,053.60x = 285,070.08 × 71,722.08
  4. Step 4: Simplify right side
    190,053.60x = 20,445,819,083.37
  5. Step 5: Solve for x
    x = 20,445,819,083.37/190,053.60
  6. Step 6: Final answer
    x = 107,579.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.