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Finding the Fourth Proportional to 155,477.84, 214,575.72 and 91,821.56

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Solution

The fourth proportional to 155,477.84, 214,575.72 and 91,821.56 is: 126,723.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,477.84 : 214,575.72 = 91,821.56 : x
  2. Step 2: Convert to fraction form
    155,477.84/214,575.72 = 91,821.56/x
  3. Step 3: Cross multiply
    155,477.84x = 214,575.72 × 91,821.56
  4. Step 4: Simplify right side
    155,477.84x = 19,702,677,348.52
  5. Step 5: Solve for x
    x = 19,702,677,348.52/155,477.84
  6. Step 6: Final answer
    x = 126,723.38

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1.5x scale

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.