Home / 130,882.18-180,626.34-72,745.88

Finding the Fourth Proportional to 130,882.18, 180,626.34 and 72,745.88

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Solution

The fourth proportional to 130,882.18, 180,626.34 and 72,745.88 is: 100,394.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,882.18 : 180,626.34 = 72,745.88 : x
  2. Step 2: Convert to fraction form
    130,882.18/180,626.34 = 72,745.88/x
  3. Step 3: Cross multiply
    130,882.18x = 180,626.34 × 72,745.88
  4. Step 4: Simplify right side
    130,882.18x = 13,139,822,054.48
  5. Step 5: Solve for x
    x = 13,139,822,054.48/130,882.18
  6. Step 6: Final answer
    x = 100,394.28

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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.