Home / 149,417.19-206,190.44-81,432.81

Finding the Fourth Proportional to 149,417.19, 206,190.44 and 81,432.81

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Solution

The fourth proportional to 149,417.19, 206,190.44 and 81,432.81 is: 112,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,417.19 : 206,190.44 = 81,432.81 : x
  2. Step 2: Convert to fraction form
    149,417.19/206,190.44 = 81,432.81/x
  3. Step 3: Cross multiply
    149,417.19x = 206,190.44 × 81,432.81
  4. Step 4: Simplify right side
    149,417.19x = 16,790,666,924.34
  5. Step 5: Solve for x
    x = 16,790,666,924.34/149,417.19
  6. Step 6: Final answer
    x = 112,374.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.