Home / 127,744.20-191,357.10-72,275.40

Finding the Fourth Proportional to 127,744.20, 191,357.10 and 72,275.40

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Solution

The fourth proportional to 127,744.20, 191,357.10 and 72,275.40 is: 108,266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,744.20 : 191,357.10 = 72,275.40 : x
  2. Step 2: Convert to fraction form
    127,744.20/191,357.10 = 72,275.40/x
  3. Step 3: Cross multiply
    127,744.20x = 191,357.10 × 72,275.40
  4. Step 4: Simplify right side
    127,744.20x = 13,830,410,945.34
  5. Step 5: Solve for x
    x = 13,830,410,945.34/127,744.20
  6. Step 6: Final answer
    x = 108,266.45

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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.