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Finding the Fourth Proportional to 123,866.16, 171,006.12 and 81,547.71

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Solution

The fourth proportional to 123,866.16, 171,006.12 and 81,547.71 is: 112,582.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,866.16 : 171,006.12 = 81,547.71 : x
  2. Step 2: Convert to fraction form
    123,866.16/171,006.12 = 81,547.71/x
  3. Step 3: Cross multiply
    123,866.16x = 171,006.12 × 81,547.71
  4. Step 4: Simplify right side
    123,866.16x = 13,945,157,481.99
  5. Step 5: Solve for x
    x = 13,945,157,481.99/123,866.16
  6. Step 6: Final answer
    x = 112,582.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.