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Finding the Fourth Proportional to 158,411.63, 218,554.22 and 90,379.73

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Solution

The fourth proportional to 158,411.63, 218,554.22 and 90,379.73 is: 124,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,411.63 : 218,554.22 = 90,379.73 : x
  2. Step 2: Convert to fraction form
    158,411.63/218,554.22 = 90,379.73/x
  3. Step 3: Cross multiply
    158,411.63x = 218,554.22 × 90,379.73
  4. Step 4: Simplify right side
    158,411.63x = 19,752,869,849.29
  5. Step 5: Solve for x
    x = 19,752,869,849.29/158,411.63
  6. Step 6: Final answer
    x = 124,693.31

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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.