Home / 119,851.90-165,399.11-66,140.40

Finding the Fourth Proportional to 119,851.90, 165,399.11 and 66,140.40

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Solution

The fourth proportional to 119,851.90, 165,399.11 and 66,140.40 is: 91,275.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,851.90 : 165,399.11 = 66,140.40 : x
  2. Step 2: Convert to fraction form
    119,851.90/165,399.11 = 66,140.40/x
  3. Step 3: Cross multiply
    119,851.90x = 165,399.11 × 66,140.40
  4. Step 4: Simplify right side
    119,851.90x = 10,939,563,274.28
  5. Step 5: Solve for x
    x = 10,939,563,274.28/119,851.90
  6. Step 6: Final answer
    x = 91,275.67

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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.