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Finding the Fourth Proportional to 152,065.40, 209,846.52 and 84,080.56

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Solution

The fourth proportional to 152,065.40, 209,846.52 and 84,080.56 is: 116,029.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,065.40 : 209,846.52 = 84,080.56 : x
  2. Step 2: Convert to fraction form
    152,065.40/209,846.52 = 84,080.56/x
  3. Step 3: Cross multiply
    152,065.40x = 209,846.52 × 84,080.56
  4. Step 4: Simplify right side
    152,065.40x = 17,644,012,915.65
  5. Step 5: Solve for x
    x = 17,644,012,915.65/152,065.40
  6. Step 6: Final answer
    x = 116,029.11

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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.