Home / 256,116.84-384,176.18-78,623.86

Finding the Fourth Proportional to 256,116.84, 384,176.18 and 78,623.86

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Solution

The fourth proportional to 256,116.84, 384,176.18 and 78,623.86 is: 117,936.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,116.84 : 384,176.18 = 78,623.86 : x
  2. Step 2: Convert to fraction form
    256,116.84/384,176.18 = 78,623.86/x
  3. Step 3: Cross multiply
    256,116.84x = 384,176.18 × 78,623.86
  4. Step 4: Simplify right side
    256,116.84x = 30,205,411,877.65
  5. Step 5: Solve for x
    x = 30,205,411,877.65/256,116.84
  6. Step 6: Final answer
    x = 117,936.07

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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.