Home / 145,508.40-200,779.56-81,861.84

Finding the Fourth Proportional to 145,508.40, 200,779.56 and 81,861.84

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Solution

The fourth proportional to 145,508.40, 200,779.56 and 81,861.84 is: 112,956.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,508.40 : 200,779.56 = 81,861.84 : x
  2. Step 2: Convert to fraction form
    145,508.40/200,779.56 = 81,861.84/x
  3. Step 3: Cross multiply
    145,508.40x = 200,779.56 × 81,861.84
  4. Step 4: Simplify right side
    145,508.40x = 16,436,184,215.99
  5. Step 5: Solve for x
    x = 16,436,184,215.99/145,508.40
  6. Step 6: Final answer
    x = 112,956.94

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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.