Home / 118,973.64-164,127-71,217.80

Finding the Fourth Proportional to 118,973.64, 164,127 and 71,217.80

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Solution

The fourth proportional to 118,973.64, 164,127 and 71,217.80 is: 98,246.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,973.64 : 164,127 = 71,217.80 : x
  2. Step 2: Convert to fraction form
    118,973.64/164,127 = 71,217.80/x
  3. Step 3: Cross multiply
    118,973.64x = 164,127 × 71,217.80
  4. Step 4: Simplify right side
    118,973.64x = 11,688,763,860.60
  5. Step 5: Solve for x
    x = 11,688,763,860.60/118,973.64
  6. Step 6: Final answer
    x = 98,246.67

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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.