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Finding the Fourth Proportional to 173,754.60, 261,188.70 and 161,428.20

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Solution

The fourth proportional to 173,754.60, 261,188.70 and 161,428.20 is: 242,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,754.60 : 261,188.70 = 161,428.20 : x
  2. Step 2: Convert to fraction form
    173,754.60/261,188.70 = 161,428.20/x
  3. Step 3: Cross multiply
    173,754.60x = 261,188.70 × 161,428.20
  4. Step 4: Simplify right side
    173,754.60x = 42,163,221,701.34
  5. Step 5: Solve for x
    x = 42,163,221,701.34/173,754.60
  6. Step 6: Final answer
    x = 242,659.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.