Home / 128,466.20-192,699.30-34,971.80

Finding the Fourth Proportional to 128,466.20, 192,699.30 and 34,971.80

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Solution

The fourth proportional to 128,466.20, 192,699.30 and 34,971.80 is: 52,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,466.20 : 192,699.30 = 34,971.80 : x
  2. Step 2: Convert to fraction form
    128,466.20/192,699.30 = 34,971.80/x
  3. Step 3: Cross multiply
    128,466.20x = 192,699.30 × 34,971.80
  4. Step 4: Simplify right side
    128,466.20x = 6,739,041,379.74
  5. Step 5: Solve for x
    x = 6,739,041,379.74/128,466.20
  6. Step 6: Final answer
    x = 52,457.70

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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.