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Finding the Fourth Proportional to 191,573.01, 287,359.58 and 79,129.64

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Solution

The fourth proportional to 191,573.01, 287,359.58 and 79,129.64 is: 118,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,573.01 : 287,359.58 = 79,129.64 : x
  2. Step 2: Convert to fraction form
    191,573.01/287,359.58 = 79,129.64/x
  3. Step 3: Cross multiply
    191,573.01x = 287,359.58 × 79,129.64
  4. Step 4: Simplify right side
    191,573.01x = 22,738,661,032.17
  5. Step 5: Solve for x
    x = 22,738,661,032.17/191,573.01
  6. Step 6: Final answer
    x = 118,694.49

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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.