Home / 128,763.02-193,172.34-52,861.70

Finding the Fourth Proportional to 128,763.02, 193,172.34 and 52,861.70

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Solution

The fourth proportional to 128,763.02, 193,172.34 and 52,861.70 is: 79,303.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,763.02 : 193,172.34 = 52,861.70 : x
  2. Step 2: Convert to fraction form
    128,763.02/193,172.34 = 52,861.70/x
  3. Step 3: Cross multiply
    128,763.02x = 193,172.34 × 52,861.70
  4. Step 4: Simplify right side
    128,763.02x = 10,211,418,285.38
  5. Step 5: Solve for x
    x = 10,211,418,285.38/128,763.02
  6. Step 6: Final answer
    x = 79,303.97

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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.