Home / 108,139.20-162,208.80-38,025.60

Finding the Fourth Proportional to 108,139.20, 162,208.80 and 38,025.60

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Solution

The fourth proportional to 108,139.20, 162,208.80 and 38,025.60 is: 57,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,139.20 : 162,208.80 = 38,025.60 : x
  2. Step 2: Convert to fraction form
    108,139.20/162,208.80 = 38,025.60/x
  3. Step 3: Cross multiply
    108,139.20x = 162,208.80 × 38,025.60
  4. Step 4: Simplify right side
    108,139.20x = 6,168,086,945.28
  5. Step 5: Solve for x
    x = 6,168,086,945.28/108,139.20
  6. Step 6: Final answer
    x = 57,038.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.