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Finding the Fourth Proportional to 155,950.12, 215,210.96 and 84,329.96

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Solution

The fourth proportional to 155,950.12, 215,210.96 and 84,329.96 is: 116,375.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,950.12 : 215,210.96 = 84,329.96 : x
  2. Step 2: Convert to fraction form
    155,950.12/215,210.96 = 84,329.96/x
  3. Step 3: Cross multiply
    155,950.12x = 215,210.96 × 84,329.96
  4. Step 4: Simplify right side
    155,950.12x = 18,148,731,648.36
  5. Step 5: Solve for x
    x = 18,148,731,648.36/155,950.12
  6. Step 6: Final answer
    x = 116,375.23

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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.