Home / 159,039.84-219,475.14-87,418.32

Finding the Fourth Proportional to 159,039.84, 219,475.14 and 87,418.32

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Solution

The fourth proportional to 159,039.84, 219,475.14 and 87,418.32 is: 120,637.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,039.84 : 219,475.14 = 87,418.32 : x
  2. Step 2: Convert to fraction form
    159,039.84/219,475.14 = 87,418.32/x
  3. Step 3: Cross multiply
    159,039.84x = 219,475.14 × 87,418.32
  4. Step 4: Simplify right side
    159,039.84x = 19,186,148,020.56
  5. Step 5: Solve for x
    x = 19,186,148,020.56/159,039.84
  6. Step 6: Final answer
    x = 120,637.37

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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.