Home / 109,397.60-163,997.40-76,133.60

Finding the Fourth Proportional to 109,397.60, 163,997.40 and 76,133.60

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Solution

The fourth proportional to 109,397.60, 163,997.40 and 76,133.60 is: 114,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,397.60 : 163,997.40 = 76,133.60 : x
  2. Step 2: Convert to fraction form
    109,397.60/163,997.40 = 76,133.60/x
  3. Step 3: Cross multiply
    109,397.60x = 163,997.40 × 76,133.60
  4. Step 4: Simplify right side
    109,397.60x = 12,485,712,452.64
  5. Step 5: Solve for x
    x = 12,485,712,452.64/109,397.60
  6. Step 6: Final answer
    x = 114,131.50

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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.