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Finding the Fourth Proportional to 140,065.29, 210,159.54 and 73,489.72

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Solution

The fourth proportional to 140,065.29, 210,159.54 and 73,489.72 is: 110,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,065.29 : 210,159.54 = 73,489.72 : x
  2. Step 2: Convert to fraction form
    140,065.29/210,159.54 = 73,489.72/x
  3. Step 3: Cross multiply
    140,065.29x = 210,159.54 × 73,489.72
  4. Step 4: Simplify right side
    140,065.29x = 15,444,565,749.93
  5. Step 5: Solve for x
    x = 15,444,565,749.93/140,065.29
  6. Step 6: Final answer
    x = 110,266.90

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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.