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Finding the Fourth Proportional to 131,459.60, 197,203.80 and 127,312.40

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Solution

The fourth proportional to 131,459.60, 197,203.80 and 127,312.40 is: 190,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,459.60 : 197,203.80 = 127,312.40 : x
  2. Step 2: Convert to fraction form
    131,459.60/197,203.80 = 127,312.40/x
  3. Step 3: Cross multiply
    131,459.60x = 197,203.80 × 127,312.40
  4. Step 4: Simplify right side
    131,459.60x = 25,106,489,067.12
  5. Step 5: Solve for x
    x = 25,106,489,067.12/131,459.60
  6. Step 6: Final answer
    x = 190,982.55

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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.