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Finding the Fourth Proportional to 79,875.36, 119,946.72 and 76,696.80

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Solution

The fourth proportional to 79,875.36, 119,946.72 and 76,696.80 is: 115,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,875.36 : 119,946.72 = 76,696.80 : x
  2. Step 2: Convert to fraction form
    79,875.36/119,946.72 = 76,696.80/x
  3. Step 3: Cross multiply
    79,875.36x = 119,946.72 × 76,696.80
  4. Step 4: Simplify right side
    79,875.36x = 9,199,529,594.50
  5. Step 5: Solve for x
    x = 9,199,529,594.50/79,875.36
  6. Step 6: Final answer
    x = 115,173.56

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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.