Home / 158,708.57-219,018.21-87,089.18

Finding the Fourth Proportional to 158,708.57, 219,018.21 and 87,089.18

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Solution

The fourth proportional to 158,708.57, 219,018.21 and 87,089.18 is: 120,183.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,708.57 : 219,018.21 = 87,089.18 : x
  2. Step 2: Convert to fraction form
    158,708.57/219,018.21 = 87,089.18/x
  3. Step 3: Cross multiply
    158,708.57x = 219,018.21 × 87,089.18
  4. Step 4: Simplify right side
    158,708.57x = 19,074,116,313.97
  5. Step 5: Solve for x
    x = 19,074,116,313.97/158,708.57
  6. Step 6: Final answer
    x = 120,183.28

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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.