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Finding the Fourth Proportional to 152,658.90, 210,661.83 and 84,669.85

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Solution

The fourth proportional to 152,658.90, 210,661.83 and 84,669.85 is: 116,840.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,658.90 : 210,661.83 = 84,669.85 : x
  2. Step 2: Convert to fraction form
    152,658.90/210,661.83 = 84,669.85/x
  3. Step 3: Cross multiply
    152,658.90x = 210,661.83 × 84,669.85
  4. Step 4: Simplify right side
    152,658.90x = 17,836,705,546.83
  5. Step 5: Solve for x
    x = 17,836,705,546.83/152,658.90
  6. Step 6: Final answer
    x = 116,840.26

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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.