Home / 191,428.56-287,122.68-51,201.36

Finding the Fourth Proportional to 191,428.56, 287,122.68 and 51,201.36

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Solution

The fourth proportional to 191,428.56, 287,122.68 and 51,201.36 is: 76,796.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,428.56 : 287,122.68 = 51,201.36 : x
  2. Step 2: Convert to fraction form
    191,428.56/287,122.68 = 51,201.36/x
  3. Step 3: Cross multiply
    191,428.56x = 287,122.68 × 51,201.36
  4. Step 4: Simplify right side
    191,428.56x = 14,701,071,702.84
  5. Step 5: Solve for x
    x = 14,701,071,702.84/191,428.56
  6. Step 6: Final answer
    x = 76,796.65

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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.