Home / 133,311.86-183,990.40-76,712.30

Finding the Fourth Proportional to 133,311.86, 183,990.40 and 76,712.30

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Solution

The fourth proportional to 133,311.86, 183,990.40 and 76,712.30 is: 105,874.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,311.86 : 183,990.40 = 76,712.30 : x
  2. Step 2: Convert to fraction form
    133,311.86/183,990.40 = 76,712.30/x
  3. Step 3: Cross multiply
    133,311.86x = 183,990.40 × 76,712.30
  4. Step 4: Simplify right side
    133,311.86x = 14,114,326,761.92
  5. Step 5: Solve for x
    x = 14,114,326,761.92/133,311.86
  6. Step 6: Final answer
    x = 105,874.50

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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.