Home / 131,421.60-197,362.80-127,274.40

Finding the Fourth Proportional to 131,421.60, 197,362.80 and 127,274.40

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Solution

The fourth proportional to 131,421.60, 197,362.80 and 127,274.40 is: 191,134.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.60 : 197,362.80 = 127,274.40 : x
  2. Step 2: Convert to fraction form
    131,421.60/197,362.80 = 127,274.40/x
  3. Step 3: Cross multiply
    131,421.60x = 197,362.80 × 127,274.40
  4. Step 4: Simplify right side
    131,421.60x = 25,119,231,952.32
  5. Step 5: Solve for x
    x = 25,119,231,952.32/131,421.60
  6. Step 6: Final answer
    x = 191,134.73

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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.