Home / 118,895.21-164,096.20-90,309.50

Finding the Fourth Proportional to 118,895.21, 164,096.20 and 90,309.50

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Solution

The fourth proportional to 118,895.21, 164,096.20 and 90,309.50 is: 124,642.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,895.21 : 164,096.20 = 90,309.50 : x
  2. Step 2: Convert to fraction form
    118,895.21/164,096.20 = 90,309.50/x
  3. Step 3: Cross multiply
    118,895.21x = 164,096.20 × 90,309.50
  4. Step 4: Simplify right side
    118,895.21x = 14,819,445,773.90
  5. Step 5: Solve for x
    x = 14,819,445,773.90/118,895.21
  6. Step 6: Final answer
    x = 124,642.92

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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.