Home / 102,742.35-141,744.39-64,479.57

Finding the Fourth Proportional to 102,742.35, 141,744.39 and 64,479.57

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Solution

The fourth proportional to 102,742.35, 141,744.39 and 64,479.57 is: 88,956.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,742.35 : 141,744.39 = 64,479.57 : x
  2. Step 2: Convert to fraction form
    102,742.35/141,744.39 = 64,479.57/x
  3. Step 3: Cross multiply
    102,742.35x = 141,744.39 × 64,479.57
  4. Step 4: Simplify right side
    102,742.35x = 9,139,616,285.99
  5. Step 5: Solve for x
    x = 9,139,616,285.99/102,742.35
  6. Step 6: Final answer
    x = 88,956.66

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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.