Home / 127,941.40-191,912.10-71,954.20

Finding the Fourth Proportional to 127,941.40, 191,912.10 and 71,954.20

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Solution

The fourth proportional to 127,941.40, 191,912.10 and 71,954.20 is: 107,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,941.40 : 191,912.10 = 71,954.20 : x
  2. Step 2: Convert to fraction form
    127,941.40/191,912.10 = 71,954.20/x
  3. Step 3: Cross multiply
    127,941.40x = 191,912.10 × 71,954.20
  4. Step 4: Simplify right side
    127,941.40x = 13,808,881,625.82
  5. Step 5: Solve for x
    x = 13,808,881,625.82/127,941.40
  6. Step 6: Final answer
    x = 107,931.30

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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.