Home / 142,094.16-196,089.96-78,431.97

Finding the Fourth Proportional to 142,094.16, 196,089.96 and 78,431.97

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Solution

The fourth proportional to 142,094.16, 196,089.96 and 78,431.97 is: 108,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,094.16 : 196,089.96 = 78,431.97 : x
  2. Step 2: Convert to fraction form
    142,094.16/196,089.96 = 78,431.97/x
  3. Step 3: Cross multiply
    142,094.16x = 196,089.96 × 78,431.97
  4. Step 4: Simplify right side
    142,094.16x = 15,379,721,860.02
  5. Step 5: Solve for x
    x = 15,379,721,860.02/142,094.16
  6. Step 6: Final answer
    x = 108,236.13

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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.