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Finding the Fourth Proportional to 102,167.94, 140,988.22 and 56,223.30

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Solution

The fourth proportional to 102,167.94, 140,988.22 and 56,223.30 is: 77,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,167.94 : 140,988.22 = 56,223.30 : x
  2. Step 2: Convert to fraction form
    102,167.94/140,988.22 = 56,223.30/x
  3. Step 3: Cross multiply
    102,167.94x = 140,988.22 × 56,223.30
  4. Step 4: Simplify right side
    102,167.94x = 7,926,822,989.53
  5. Step 5: Solve for x
    x = 7,926,822,989.53/102,167.94
  6. Step 6: Final answer
    x = 77,586.21

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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.