Home / 117,867.74-162,730.15-81,136.67

Finding the Fourth Proportional to 117,867.74, 162,730.15 and 81,136.67

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Solution

The fourth proportional to 117,867.74, 162,730.15 and 81,136.67 is: 112,018.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,867.74 : 162,730.15 = 81,136.67 : x
  2. Step 2: Convert to fraction form
    117,867.74/162,730.15 = 81,136.67/x
  3. Step 3: Cross multiply
    117,867.74x = 162,730.15 × 81,136.67
  4. Step 4: Simplify right side
    117,867.74x = 13,203,381,463.11
  5. Step 5: Solve for x
    x = 13,203,381,463.11/117,867.74
  6. Step 6: Final answer
    x = 112,018.62

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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.