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Finding the Fourth Proportional to 121,788, 182,705.04 and 56,124

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Solution

The fourth proportional to 121,788, 182,705.04 and 56,124 is: 84,196.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,788 : 182,705.04 = 56,124 : x
  2. Step 2: Convert to fraction form
    121,788/182,705.04 = 56,124/x
  3. Step 3: Cross multiply
    121,788x = 182,705.04 × 56,124
  4. Step 4: Simplify right side
    121,788x = 10,254,137,664.96
  5. Step 5: Solve for x
    x = 10,254,137,664.96/121,788
  6. Step 6: Final answer
    x = 84,196.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.