Home / 107,630.40-161,445.60-84,276.80

Finding the Fourth Proportional to 107,630.40, 161,445.60 and 84,276.80

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Solution

The fourth proportional to 107,630.40, 161,445.60 and 84,276.80 is: 126,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,630.40 : 161,445.60 = 84,276.80 : x
  2. Step 2: Convert to fraction form
    107,630.40/161,445.60 = 84,276.80/x
  3. Step 3: Cross multiply
    107,630.40x = 161,445.60 × 84,276.80
  4. Step 4: Simplify right side
    107,630.40x = 13,606,118,542.08
  5. Step 5: Solve for x
    x = 13,606,118,542.08/107,630.40
  6. Step 6: Final answer
    x = 126,415.20

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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.