Home / 257,138.84-385,957.04-124,112.76

Finding the Fourth Proportional to 257,138.84, 385,957.04 and 124,112.76

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Solution

The fourth proportional to 257,138.84, 385,957.04 and 124,112.76 is: 186,289.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,138.84 : 385,957.04 = 124,112.76 : x
  2. Step 2: Convert to fraction form
    257,138.84/385,957.04 = 124,112.76/x
  3. Step 3: Cross multiply
    257,138.84x = 385,957.04 × 124,112.76
  4. Step 4: Simplify right side
    257,138.84x = 47,902,192,855.27
  5. Step 5: Solve for x
    x = 47,902,192,855.27/257,138.84
  6. Step 6: Final answer
    x = 186,289.22

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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.