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Finding the Fourth Proportional to 129,483.80, 194,225.70 and 76,952.60

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Solution

The fourth proportional to 129,483.80, 194,225.70 and 76,952.60 is: 115,428.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,483.80 : 194,225.70 = 76,952.60 : x
  2. Step 2: Convert to fraction form
    129,483.80/194,225.70 = 76,952.60/x
  3. Step 3: Cross multiply
    129,483.80x = 194,225.70 × 76,952.60
  4. Step 4: Simplify right side
    129,483.80x = 14,946,172,601.82
  5. Step 5: Solve for x
    x = 14,946,172,601.82/129,483.80
  6. Step 6: Final answer
    x = 115,428.90

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1.5x scale

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.