Home / 230,533.18-318,137.15-128,565.08

Finding the Fourth Proportional to 230,533.18, 318,137.15 and 128,565.08

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Solution

The fourth proportional to 230,533.18, 318,137.15 and 128,565.08 is: 177,420.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,533.18 : 318,137.15 = 128,565.08 : x
  2. Step 2: Convert to fraction form
    230,533.18/318,137.15 = 128,565.08/x
  3. Step 3: Cross multiply
    230,533.18x = 318,137.15 × 128,565.08
  4. Step 4: Simplify right side
    230,533.18x = 40,901,328,140.72
  5. Step 5: Solve for x
    x = 40,901,328,140.72/230,533.18
  6. Step 6: Final answer
    x = 177,420.57

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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.