Home / 130,755.64-180,223.50-100,118.20

Finding the Fourth Proportional to 130,755.64, 180,223.50 and 100,118.20

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Solution

The fourth proportional to 130,755.64, 180,223.50 and 100,118.20 is: 137,995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,755.64 : 180,223.50 = 100,118.20 : x
  2. Step 2: Convert to fraction form
    130,755.64/180,223.50 = 100,118.20/x
  3. Step 3: Cross multiply
    130,755.64x = 180,223.50 × 100,118.20
  4. Step 4: Simplify right side
    130,755.64x = 18,043,652,417.70
  5. Step 5: Solve for x
    x = 18,043,652,417.70/130,755.64
  6. Step 6: Final answer
    x = 137,995.21

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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.