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Finding the Fourth Proportional to 158,522.55, 218,762.90 and 90,548.54

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Solution

The fourth proportional to 158,522.55, 218,762.90 and 90,548.54 is: 124,957.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,522.55 : 218,762.90 = 90,548.54 : x
  2. Step 2: Convert to fraction form
    158,522.55/218,762.90 = 90,548.54/x
  3. Step 3: Cross multiply
    158,522.55x = 218,762.90 × 90,548.54
  4. Step 4: Simplify right side
    158,522.55x = 19,808,659,654.61
  5. Step 5: Solve for x
    x = 19,808,659,654.61/158,522.55
  6. Step 6: Final answer
    x = 124,957.99

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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.