Home / 171,612.40-257,418.60-145,433.20

Finding the Fourth Proportional to 171,612.40, 257,418.60 and 145,433.20

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Solution

The fourth proportional to 171,612.40, 257,418.60 and 145,433.20 is: 218,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,612.40 : 257,418.60 = 145,433.20 : x
  2. Step 2: Convert to fraction form
    171,612.40/257,418.60 = 145,433.20/x
  3. Step 3: Cross multiply
    171,612.40x = 257,418.60 × 145,433.20
  4. Step 4: Simplify right side
    171,612.40x = 37,437,210,737.52
  5. Step 5: Solve for x
    x = 37,437,210,737.52/171,612.40
  6. Step 6: Final answer
    x = 218,149.80

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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.