Home / 119,981.62-180,009.56-72,003.80

Finding the Fourth Proportional to 119,981.62, 180,009.56 and 72,003.80

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Solution

The fourth proportional to 119,981.62, 180,009.56 and 72,003.80 is: 108,027.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,981.62 : 180,009.56 = 72,003.80 : x
  2. Step 2: Convert to fraction form
    119,981.62/180,009.56 = 72,003.80/x
  3. Step 3: Cross multiply
    119,981.62x = 180,009.56 × 72,003.80
  4. Step 4: Simplify right side
    119,981.62x = 12,961,372,108.81
  5. Step 5: Solve for x
    x = 12,961,372,108.81/119,981.62
  6. Step 6: Final answer
    x = 108,027.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.