Home / 130,679.64-180,128.34-88,164.36

Finding the Fourth Proportional to 130,679.64, 180,128.34 and 88,164.36

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Solution

The fourth proportional to 130,679.64, 180,128.34 and 88,164.36 is: 121,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,679.64 : 180,128.34 = 88,164.36 : x
  2. Step 2: Convert to fraction form
    130,679.64/180,128.34 = 88,164.36/x
  3. Step 3: Cross multiply
    130,679.64x = 180,128.34 × 88,164.36
  4. Step 4: Simplify right side
    130,679.64x = 15,880,899,813.96
  5. Step 5: Solve for x
    x = 15,880,899,813.96/130,679.64
  6. Step 6: Final answer
    x = 121,525.43

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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.