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Finding the Fourth Proportional to 171,373.80, 257,060.70 and 121,510.20

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Solution

The fourth proportional to 171,373.80, 257,060.70 and 121,510.20 is: 182,265.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,373.80 : 257,060.70 = 121,510.20 : x
  2. Step 2: Convert to fraction form
    171,373.80/257,060.70 = 121,510.20/x
  3. Step 3: Cross multiply
    171,373.80x = 257,060.70 × 121,510.20
  4. Step 4: Simplify right side
    171,373.80x = 31,235,497,069.14
  5. Step 5: Solve for x
    x = 31,235,497,069.14/171,373.80
  6. Step 6: Final answer
    x = 182,265.30

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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.