Home / 142,704.47-196,925.14-78,173.98

Finding the Fourth Proportional to 142,704.47, 196,925.14 and 78,173.98

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Solution

The fourth proportional to 142,704.47, 196,925.14 and 78,173.98 is: 107,876.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,704.47 : 196,925.14 = 78,173.98 : x
  2. Step 2: Convert to fraction form
    142,704.47/196,925.14 = 78,173.98/x
  3. Step 3: Cross multiply
    142,704.47x = 196,925.14 × 78,173.98
  4. Step 4: Simplify right side
    142,704.47x = 15,394,421,564.99
  5. Step 5: Solve for x
    x = 15,394,421,564.99/142,704.47
  6. Step 6: Final answer
    x = 107,876.24

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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.