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Finding the Fourth Proportional to 102,869.65, 141,881.63 and 88,553.00

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Solution

The fourth proportional to 102,869.65, 141,881.63 and 88,553.00 is: 122,135.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,869.65 : 141,881.63 = 88,553.00 : x
  2. Step 2: Convert to fraction form
    102,869.65/141,881.63 = 88,553.00/x
  3. Step 3: Cross multiply
    102,869.65x = 141,881.63 × 88,553.00
  4. Step 4: Simplify right side
    102,869.65x = 12,564,043,095.24
  5. Step 5: Solve for x
    x = 12,564,043,095.24/102,869.65
  6. Step 6: Final answer
    x = 122,135.57

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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.