Home / 142,093.03-196,088.40-78,430.85

Finding the Fourth Proportional to 142,093.03, 196,088.40 and 78,430.85

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Solution

The fourth proportional to 142,093.03, 196,088.40 and 78,430.85 is: 108,234.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,093.03 : 196,088.40 = 78,430.85 : x
  2. Step 2: Convert to fraction form
    142,093.03/196,088.40 = 78,430.85/x
  3. Step 3: Cross multiply
    142,093.03x = 196,088.40 × 78,430.85
  4. Step 4: Simplify right side
    142,093.03x = 15,379,379,887.14
  5. Step 5: Solve for x
    x = 15,379,379,887.14/142,093.03
  6. Step 6: Final answer
    x = 108,234.58

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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.