Home / 127,634.80-176,184.21-100,339.67

Finding the Fourth Proportional to 127,634.80, 176,184.21 and 100,339.67

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Solution

The fourth proportional to 127,634.80, 176,184.21 and 100,339.67 is: 138,506.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,634.80 : 176,184.21 = 100,339.67 : x
  2. Step 2: Convert to fraction form
    127,634.80/176,184.21 = 100,339.67/x
  3. Step 3: Cross multiply
    127,634.80x = 176,184.21 × 100,339.67
  4. Step 4: Simplify right side
    127,634.80x = 17,678,265,920.14
  5. Step 5: Solve for x
    x = 17,678,265,920.14/127,634.80
  6. Step 6: Final answer
    x = 138,506.63

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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.