Home / 149,411.07-206,192.51-81,433.71

Finding the Fourth Proportional to 149,411.07, 206,192.51 and 81,433.71

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Solution

The fourth proportional to 149,411.07, 206,192.51 and 81,433.71 is: 112,381.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,411.07 : 206,192.51 = 81,433.71 : x
  2. Step 2: Convert to fraction form
    149,411.07/206,192.51 = 81,433.71/x
  3. Step 3: Cross multiply
    149,411.07x = 206,192.51 × 81,433.71
  4. Step 4: Simplify right side
    149,411.07x = 16,791,021,063.51
  5. Step 5: Solve for x
    x = 16,791,021,063.51/149,411.07
  6. Step 6: Final answer
    x = 112,381.37

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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.