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Finding the Fourth Proportional to 156,990.98, 216,653.24 and 89,935.94

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Solution

The fourth proportional to 156,990.98, 216,653.24 and 89,935.94 is: 124,114.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,990.98 : 216,653.24 = 89,935.94 : x
  2. Step 2: Convert to fraction form
    156,990.98/216,653.24 = 89,935.94/x
  3. Step 3: Cross multiply
    156,990.98x = 216,653.24 × 89,935.94
  4. Step 4: Simplify right side
    156,990.98x = 19,484,912,793.45
  5. Step 5: Solve for x
    x = 19,484,912,793.45/156,990.98
  6. Step 6: Final answer
    x = 124,114.86

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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.