Home / 143,656.64-198,249.36-80,000.36

Finding the Fourth Proportional to 143,656.64, 198,249.36 and 80,000.36

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Solution

The fourth proportional to 143,656.64, 198,249.36 and 80,000.36 is: 110,402.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,656.64 : 198,249.36 = 80,000.36 : x
  2. Step 2: Convert to fraction form
    143,656.64/198,249.36 = 80,000.36/x
  3. Step 3: Cross multiply
    143,656.64x = 198,249.36 × 80,000.36
  4. Step 4: Simplify right side
    143,656.64x = 15,860,020,169.77
  5. Step 5: Solve for x
    x = 15,860,020,169.77/143,656.64
  6. Step 6: Final answer
    x = 110,402.28

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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.