Home / 127,986.90-176,657.05-74,289.22

Finding the Fourth Proportional to 127,986.90, 176,657.05 and 74,289.22

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Solution

The fourth proportional to 127,986.90, 176,657.05 and 74,289.22 is: 102,539.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,986.90 : 176,657.05 = 74,289.22 : x
  2. Step 2: Convert to fraction form
    127,986.90/176,657.05 = 74,289.22/x
  3. Step 3: Cross multiply
    127,986.90x = 176,657.05 × 74,289.22
  4. Step 4: Simplify right side
    127,986.90x = 13,123,713,568.72
  5. Step 5: Solve for x
    x = 13,123,713,568.72/127,986.90
  6. Step 6: Final answer
    x = 102,539.51

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1.5x scale

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.