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Finding the Fourth Proportional to 155,312.80, 232,767.60 and 72,029.60

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Solution

The fourth proportional to 155,312.80, 232,767.60 and 72,029.60 is: 107,950.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,312.80 : 232,767.60 = 72,029.60 : x
  2. Step 2: Convert to fraction form
    155,312.80/232,767.60 = 72,029.60/x
  3. Step 3: Cross multiply
    155,312.80x = 232,767.60 × 72,029.60
  4. Step 4: Simplify right side
    155,312.80x = 16,766,157,120.96
  5. Step 5: Solve for x
    x = 16,766,157,120.96/155,312.80
  6. Step 6: Final answer
    x = 107,950.90

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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.