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Finding the Fourth Proportional to 191,130, 263,746.92 and 106,243.92

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Solution

The fourth proportional to 191,130, 263,746.92 and 106,243.92 is: 146,609.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,130 : 263,746.92 = 106,243.92 : x
  2. Step 2: Convert to fraction form
    191,130/263,746.92 = 106,243.92/x
  3. Step 3: Cross multiply
    191,130x = 263,746.92 × 106,243.92
  4. Step 4: Simplify right side
    191,130x = 28,021,506,668.73
  5. Step 5: Solve for x
    x = 28,021,506,668.73/191,130
  6. Step 6: Final answer
    x = 146,609.67

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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.