Home / 117,290.45-161,856.87-69,515.43

Finding the Fourth Proportional to 117,290.45, 161,856.87 and 69,515.43

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Solution

The fourth proportional to 117,290.45, 161,856.87 and 69,515.43 is: 95,928.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,290.45 : 161,856.87 = 69,515.43 : x
  2. Step 2: Convert to fraction form
    117,290.45/161,856.87 = 69,515.43/x
  3. Step 3: Cross multiply
    117,290.45x = 161,856.87 × 69,515.43
  4. Step 4: Simplify right side
    117,290.45x = 11,251,549,916.50
  5. Step 5: Solve for x
    x = 11,251,549,916.50/117,290.45
  6. Step 6: Final answer
    x = 95,928.96

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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.