Home / 155,051.20-232,285.20-79,915.60

Finding the Fourth Proportional to 155,051.20, 232,285.20 and 79,915.60

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Solution

The fourth proportional to 155,051.20, 232,285.20 and 79,915.60 is: 119,723.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,051.20 : 232,285.20 = 79,915.60 : x
  2. Step 2: Convert to fraction form
    155,051.20/232,285.20 = 79,915.60/x
  3. Step 3: Cross multiply
    155,051.20x = 232,285.20 × 79,915.60
  4. Step 4: Simplify right side
    155,051.20x = 18,563,211,129.12
  5. Step 5: Solve for x
    x = 18,563,211,129.12/155,051.20
  6. Step 6: Final answer
    x = 119,723.11

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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.