Home / 131,710.10-181,740.37-80,000.28

Finding the Fourth Proportional to 131,710.10, 181,740.37 and 80,000.28

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Solution

The fourth proportional to 131,710.10, 181,740.37 and 80,000.28 is: 110,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,710.10 : 181,740.37 = 80,000.28 : x
  2. Step 2: Convert to fraction form
    131,710.10/181,740.37 = 80,000.28/x
  3. Step 3: Cross multiply
    131,710.10x = 181,740.37 × 80,000.28
  4. Step 4: Simplify right side
    131,710.10x = 14,539,280,487.30
  5. Step 5: Solve for x
    x = 14,539,280,487.30/131,710.10
  6. Step 6: Final answer
    x = 110,388.50

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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.