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Finding the Fourth Proportional to 156,618, 216,133.08 and 89,551.44

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Solution

The fourth proportional to 156,618, 216,133.08 and 89,551.44 is: 123,581.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,618 : 216,133.08 = 89,551.44 : x
  2. Step 2: Convert to fraction form
    156,618/216,133.08 = 89,551.44/x
  3. Step 3: Cross multiply
    156,618x = 216,133.08 × 89,551.44
  4. Step 4: Simplify right side
    156,618x = 19,355,028,545.64
  5. Step 5: Solve for x
    x = 19,355,028,545.64/156,618
  6. Step 6: Final answer
    x = 123,581.12

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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.