Home / 155,368.56-214,276.32-131,287.20

Finding the Fourth Proportional to 155,368.56, 214,276.32 and 131,287.20

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Solution

The fourth proportional to 155,368.56, 214,276.32 and 131,287.20 is: 181,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,368.56 : 214,276.32 = 131,287.20 : x
  2. Step 2: Convert to fraction form
    155,368.56/214,276.32 = 131,287.20/x
  3. Step 3: Cross multiply
    155,368.56x = 214,276.32 × 131,287.20
  4. Step 4: Simplify right side
    155,368.56x = 28,131,738,079.10
  5. Step 5: Solve for x
    x = 28,131,738,079.10/155,368.56
  6. Step 6: Final answer
    x = 181,064.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.