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Finding the Fourth Proportional to 104,165.72, 143,748.70 and 56,419.42

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Solution

The fourth proportional to 104,165.72, 143,748.70 and 56,419.42 is: 77,858.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,165.72 : 143,748.70 = 56,419.42 : x
  2. Step 2: Convert to fraction form
    104,165.72/143,748.70 = 56,419.42/x
  3. Step 3: Cross multiply
    104,165.72x = 143,748.70 × 56,419.42
  4. Step 4: Simplify right side
    104,165.72x = 8,110,217,779.33
  5. Step 5: Solve for x
    x = 8,110,217,779.33/104,165.72
  6. Step 6: Final answer
    x = 77,858.80

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1.5x scale

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.