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Finding the Fourth Proportional to 187,261.81, 280,963.62 and 112,434.21

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Solution

The fourth proportional to 187,261.81, 280,963.62 and 112,434.21 is: 168,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,261.81 : 280,963.62 = 112,434.21 : x
  2. Step 2: Convert to fraction form
    187,261.81/280,963.62 = 112,434.21/x
  3. Step 3: Cross multiply
    187,261.81x = 280,963.62 × 112,434.21
  4. Step 4: Simplify right side
    187,261.81x = 31,589,922,653.44
  5. Step 5: Solve for x
    x = 31,589,922,653.44/187,261.81
  6. Step 6: Final answer
    x = 168,693.89

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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.