Home / 138,744.51-191,446.90-81,362.18

Finding the Fourth Proportional to 138,744.51, 191,446.90 and 81,362.18

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Solution

The fourth proportional to 138,744.51, 191,446.90 and 81,362.18 is: 112,267.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,744.51 : 191,446.90 = 81,362.18 : x
  2. Step 2: Convert to fraction form
    138,744.51/191,446.90 = 81,362.18/x
  3. Step 3: Cross multiply
    138,744.51x = 191,446.90 × 81,362.18
  4. Step 4: Simplify right side
    138,744.51x = 15,576,537,138.24
  5. Step 5: Solve for x
    x = 15,576,537,138.24/138,744.51
  6. Step 6: Final answer
    x = 112,267.77

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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.