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Finding the Fourth Proportional to 131,668.80, 197,330.40 and 94,689.60

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Solution

The fourth proportional to 131,668.80, 197,330.40 and 94,689.60 is: 141,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,668.80 : 197,330.40 = 94,689.60 : x
  2. Step 2: Convert to fraction form
    131,668.80/197,330.40 = 94,689.60/x
  3. Step 3: Cross multiply
    131,668.80x = 197,330.40 × 94,689.60
  4. Step 4: Simplify right side
    131,668.80x = 18,685,136,643.84
  5. Step 5: Solve for x
    x = 18,685,136,643.84/131,668.80
  6. Step 6: Final answer
    x = 141,910.13

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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.