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Finding the Fourth Proportional to 191,677.68, 264,681.54 and 120,180.60

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Solution

The fourth proportional to 191,677.68, 264,681.54 and 120,180.60 is: 165,953.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,677.68 : 264,681.54 = 120,180.60 : x
  2. Step 2: Convert to fraction form
    191,677.68/264,681.54 = 120,180.60/x
  3. Step 3: Cross multiply
    191,677.68x = 264,681.54 × 120,180.60
  4. Step 4: Simplify right side
    191,677.68x = 31,809,586,286.12
  5. Step 5: Solve for x
    x = 31,809,586,286.12/191,677.68
  6. Step 6: Final answer
    x = 165,953.52

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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.