Home / 171,474.18-257,605.47-120,989.40

Finding the Fourth Proportional to 171,474.18, 257,605.47 and 120,989.40

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Solution

The fourth proportional to 171,474.18, 257,605.47 and 120,989.40 is: 181,762.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,474.18 : 257,605.47 = 120,989.40 : x
  2. Step 2: Convert to fraction form
    171,474.18/257,605.47 = 120,989.40/x
  3. Step 3: Cross multiply
    171,474.18x = 257,605.47 × 120,989.40
  4. Step 4: Simplify right side
    171,474.18x = 31,167,531,252.02
  5. Step 5: Solve for x
    x = 31,167,531,252.02/171,474.18
  6. Step 6: Final answer
    x = 181,762.24

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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.