Home / 230,513.19-318,106.85-128,539.86

Finding the Fourth Proportional to 230,513.19, 318,106.85 and 128,539.86

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Solution

The fourth proportional to 230,513.19, 318,106.85 and 128,539.86 is: 177,384.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,513.19 : 318,106.85 = 128,539.86 : x
  2. Step 2: Convert to fraction form
    230,513.19/318,106.85 = 128,539.86/x
  3. Step 3: Cross multiply
    230,513.19x = 318,106.85 × 128,539.86
  4. Step 4: Simplify right side
    230,513.19x = 40,889,409,917.79
  5. Step 5: Solve for x
    x = 40,889,409,917.79/230,513.19
  6. Step 6: Final answer
    x = 177,384.25

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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.