Home / 102,925.40-154,228.70-71,396.78

Finding the Fourth Proportional to 102,925.40, 154,228.70 and 71,396.78

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Solution

The fourth proportional to 102,925.40, 154,228.70 and 71,396.78 is: 106,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,925.40 : 154,228.70 = 71,396.78 : x
  2. Step 2: Convert to fraction form
    102,925.40/154,228.70 = 71,396.78/x
  3. Step 3: Cross multiply
    102,925.40x = 154,228.70 × 71,396.78
  4. Step 4: Simplify right side
    102,925.40x = 11,011,431,970.93
  5. Step 5: Solve for x
    x = 11,011,431,970.93/102,925.40
  6. Step 6: Final answer
    x = 106,984.60

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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.