Home / 254,195.12-381,195.59-85,670.17

Finding the Fourth Proportional to 254,195.12, 381,195.59 and 85,670.17

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Solution

The fourth proportional to 254,195.12, 381,195.59 and 85,670.17 is: 128,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,195.12 : 381,195.59 = 85,670.17 : x
  2. Step 2: Convert to fraction form
    254,195.12/381,195.59 = 85,670.17/x
  3. Step 3: Cross multiply
    254,195.12x = 381,195.59 × 85,670.17
  4. Step 4: Simplify right side
    254,195.12x = 32,657,089,617.21
  5. Step 5: Solve for x
    x = 32,657,089,617.21/254,195.12
  6. Step 6: Final answer
    x = 128,472.53

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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.