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Finding the Fourth Proportional to 127,156.08, 175,434.84 and 73,434

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Solution

The fourth proportional to 127,156.08, 175,434.84 and 73,434 is: 101,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,156.08 : 175,434.84 = 73,434 : x
  2. Step 2: Convert to fraction form
    127,156.08/175,434.84 = 73,434/x
  3. Step 3: Cross multiply
    127,156.08x = 175,434.84 × 73,434
  4. Step 4: Simplify right side
    127,156.08x = 12,882,882,040.56
  5. Step 5: Solve for x
    x = 12,882,882,040.56/127,156.08
  6. Step 6: Final answer
    x = 101,315.50

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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.