Home / 142,315.44-196,367.40-85,729.92

Finding the Fourth Proportional to 142,315.44, 196,367.40 and 85,729.92

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Solution

The fourth proportional to 142,315.44, 196,367.40 and 85,729.92 is: 118,290.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,315.44 : 196,367.40 = 85,729.92 : x
  2. Step 2: Convert to fraction form
    142,315.44/196,367.40 = 85,729.92/x
  3. Step 3: Cross multiply
    142,315.44x = 196,367.40 × 85,729.92
  4. Step 4: Simplify right side
    142,315.44x = 16,834,561,492.61
  5. Step 5: Solve for x
    x = 16,834,561,492.61/142,315.44
  6. Step 6: Final answer
    x = 118,290.48

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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.