Home / 230,737.37-318,416.94-128,761.71

Finding the Fourth Proportional to 230,737.37, 318,416.94 and 128,761.71

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Solution

The fourth proportional to 230,737.37, 318,416.94 and 128,761.71 is: 177,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,737.37 : 318,416.94 = 128,761.71 : x
  2. Step 2: Convert to fraction form
    230,737.37/318,416.94 = 128,761.71/x
  3. Step 3: Cross multiply
    230,737.37x = 318,416.94 × 128,761.71
  4. Step 4: Simplify right side
    230,737.37x = 40,999,909,687.37
  5. Step 5: Solve for x
    x = 40,999,909,687.37/230,737.37
  6. Step 6: Final answer
    x = 177,690.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.