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Finding the Fourth Proportional to 187,671.16, 281,510.34 and 61,311.76

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Solution

The fourth proportional to 187,671.16, 281,510.34 and 61,311.76 is: 91,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,671.16 : 281,510.34 = 61,311.76 : x
  2. Step 2: Convert to fraction form
    187,671.16/281,510.34 = 61,311.76/x
  3. Step 3: Cross multiply
    187,671.16x = 281,510.34 × 61,311.76
  4. Step 4: Simplify right side
    187,671.16x = 17,259,894,403.60
  5. Step 5: Solve for x
    x = 17,259,894,403.60/187,671.16
  6. Step 6: Final answer
    x = 91,968.82

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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.