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Finding the Fourth Proportional to 117,000.76, 161,450.18 and 71,658.04

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Solution

The fourth proportional to 117,000.76, 161,450.18 and 71,658.04 is: 98,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,000.76 : 161,450.18 = 71,658.04 : x
  2. Step 2: Convert to fraction form
    117,000.76/161,450.18 = 71,658.04/x
  3. Step 3: Cross multiply
    117,000.76x = 161,450.18 × 71,658.04
  4. Step 4: Simplify right side
    117,000.76x = 11,569,203,456.45
  5. Step 5: Solve for x
    x = 11,569,203,456.45/117,000.76
  6. Step 6: Final answer
    x = 98,881.44

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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.