Home / 147,815.90-203,985.91-79,832.87

Finding the Fourth Proportional to 147,815.90, 203,985.91 and 79,832.87

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Solution

The fourth proportional to 147,815.90, 203,985.91 and 79,832.87 is: 110,169.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,815.90 : 203,985.91 = 79,832.87 : x
  2. Step 2: Convert to fraction form
    147,815.90/203,985.91 = 79,832.87/x
  3. Step 3: Cross multiply
    147,815.90x = 203,985.91 × 79,832.87
  4. Step 4: Simplify right side
    147,815.90x = 16,284,780,634.86
  5. Step 5: Solve for x
    x = 16,284,780,634.86/147,815.90
  6. Step 6: Final answer
    x = 110,169.34

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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.