Home / 131,056.16-195,630.64-121,318.88

Finding the Fourth Proportional to 131,056.16, 195,630.64 and 121,318.88

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Solution

The fourth proportional to 131,056.16, 195,630.64 and 121,318.88 is: 181,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,056.16 : 195,630.64 = 121,318.88 : x
  2. Step 2: Convert to fraction form
    131,056.16/195,630.64 = 121,318.88/x
  3. Step 3: Cross multiply
    131,056.16x = 195,630.64 × 121,318.88
  4. Step 4: Simplify right side
    131,056.16x = 23,733,690,138.48
  5. Step 5: Solve for x
    x = 23,733,690,138.48/131,056.16
  6. Step 6: Final answer
    x = 181,095.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.