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Finding the Fourth Proportional to 191,855.70, 264,779.82 and 143,373.69

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Solution

The fourth proportional to 191,855.70, 264,779.82 and 143,373.69 is: 197,869.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,855.70 : 264,779.82 = 143,373.69 : x
  2. Step 2: Convert to fraction form
    191,855.70/264,779.82 = 143,373.69/x
  3. Step 3: Cross multiply
    191,855.70x = 264,779.82 × 143,373.69
  4. Step 4: Simplify right side
    191,855.70x = 37,962,459,830.94
  5. Step 5: Solve for x
    x = 37,962,459,830.94/191,855.70
  6. Step 6: Final answer
    x = 197,869.86

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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.