Home / 145,156.86-200,329.10-80,638.65

Finding the Fourth Proportional to 145,156.86, 200,329.10 and 80,638.65

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Solution

The fourth proportional to 145,156.86, 200,329.10 and 80,638.65 is: 111,288.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,156.86 : 200,329.10 = 80,638.65 : x
  2. Step 2: Convert to fraction form
    145,156.86/200,329.10 = 80,638.65/x
  3. Step 3: Cross multiply
    145,156.86x = 200,329.10 × 80,638.65
  4. Step 4: Simplify right side
    145,156.86x = 16,154,268,179.72
  5. Step 5: Solve for x
    x = 16,154,268,179.72/145,156.86
  6. Step 6: Final answer
    x = 111,288.36

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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.