Home / 102,872.60-154,307.82-78,065.02

Finding the Fourth Proportional to 102,872.60, 154,307.82 and 78,065.02

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Solution

The fourth proportional to 102,872.60, 154,307.82 and 78,065.02 is: 117,096.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,872.60 : 154,307.82 = 78,065.02 : x
  2. Step 2: Convert to fraction form
    102,872.60/154,307.82 = 78,065.02/x
  3. Step 3: Cross multiply
    102,872.60x = 154,307.82 × 78,065.02
  4. Step 4: Simplify right side
    102,872.60x = 12,046,043,054.46
  5. Step 5: Solve for x
    x = 12,046,043,054.46/102,872.60
  6. Step 6: Final answer
    x = 117,096.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.