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Finding the Fourth Proportional to 171,756.72, 257,510.53 and 115,457.19

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Solution

The fourth proportional to 171,756.72, 257,510.53 and 115,457.19 is: 173,102.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,756.72 : 257,510.53 = 115,457.19 : x
  2. Step 2: Convert to fraction form
    171,756.72/257,510.53 = 115,457.19/x
  3. Step 3: Cross multiply
    171,756.72x = 257,510.53 × 115,457.19
  4. Step 4: Simplify right side
    171,756.72x = 29,731,442,189.21
  5. Step 5: Solve for x
    x = 29,731,442,189.21/171,756.72
  6. Step 6: Final answer
    x = 173,102.06

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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.