Home / 142,369.08-196,466.40-78,705.48

Finding the Fourth Proportional to 142,369.08, 196,466.40 and 78,705.48

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Solution

The fourth proportional to 142,369.08, 196,466.40 and 78,705.48 is: 108,611.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,369.08 : 196,466.40 = 78,705.48 : x
  2. Step 2: Convert to fraction form
    142,369.08/196,466.40 = 78,705.48/x
  3. Step 3: Cross multiply
    142,369.08x = 196,466.40 × 78,705.48
  4. Step 4: Simplify right side
    142,369.08x = 15,462,982,315.87
  5. Step 5: Solve for x
    x = 15,462,982,315.87/142,369.08
  6. Step 6: Final answer
    x = 108,611.94

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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.