Home / 127,865.34-176,419.55-72,673.90

Finding the Fourth Proportional to 127,865.34, 176,419.55 and 72,673.90

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Solution

The fourth proportional to 127,865.34, 176,419.55 and 72,673.90 is: 100,270.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,865.34 : 176,419.55 = 72,673.90 : x
  2. Step 2: Convert to fraction form
    127,865.34/176,419.55 = 72,673.90/x
  3. Step 3: Cross multiply
    127,865.34x = 176,419.55 × 72,673.90
  4. Step 4: Simplify right side
    127,865.34x = 12,821,096,475.38
  5. Step 5: Solve for x
    x = 12,821,096,475.38/127,865.34
  6. Step 6: Final answer
    x = 100,270.30

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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.