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Finding the Fourth Proportional to 130,363.51, 179,808.78 and 119,642.89

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Solution

The fourth proportional to 130,363.51, 179,808.78 and 119,642.89 is: 165,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,363.51 : 179,808.78 = 119,642.89 : x
  2. Step 2: Convert to fraction form
    130,363.51/179,808.78 = 119,642.89/x
  3. Step 3: Cross multiply
    130,363.51x = 179,808.78 × 119,642.89
  4. Step 4: Simplify right side
    130,363.51x = 21,512,842,086.57
  5. Step 5: Solve for x
    x = 21,512,842,086.57/130,363.51
  6. Step 6: Final answer
    x = 165,021.96

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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.