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Finding the Fourth Proportional to 156,998.49, 216,663.60 and 89,943.45

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Solution

The fourth proportional to 156,998.49, 216,663.60 and 89,943.45 is: 124,125.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,998.49 : 216,663.60 = 89,943.45 : x
  2. Step 2: Convert to fraction form
    156,998.49/216,663.60 = 89,943.45/x
  3. Step 3: Cross multiply
    156,998.49x = 216,663.60 × 89,943.45
  4. Step 4: Simplify right side
    156,998.49x = 19,487,471,673.42
  5. Step 5: Solve for x
    x = 19,487,471,673.42/156,998.49
  6. Step 6: Final answer
    x = 124,125.22

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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.