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Finding the Fourth Proportional to 121,804.10, 182,701.90 and 42,916.58

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Solution

The fourth proportional to 121,804.10, 182,701.90 and 42,916.58 is: 64,373.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,804.10 : 182,701.90 = 42,916.58 : x
  2. Step 2: Convert to fraction form
    121,804.10/182,701.90 = 42,916.58/x
  3. Step 3: Cross multiply
    121,804.10x = 182,701.90 × 42,916.58
  4. Step 4: Simplify right side
    121,804.10x = 7,840,940,707.50
  5. Step 5: Solve for x
    x = 7,840,940,707.50/121,804.10
  6. Step 6: Final answer
    x = 64,373.37

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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.