Home / 158,709.19-219,011.16-87,087.64

Finding the Fourth Proportional to 158,709.19, 219,011.16 and 87,087.64

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Solution

The fourth proportional to 158,709.19, 219,011.16 and 87,087.64 is: 120,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,709.19 : 219,011.16 = 87,087.64 : x
  2. Step 2: Convert to fraction form
    158,709.19/219,011.16 = 87,087.64/x
  3. Step 3: Cross multiply
    158,709.19x = 219,011.16 × 87,087.64
  4. Step 4: Simplify right side
    158,709.19x = 19,073,165,058.06
  5. Step 5: Solve for x
    x = 19,073,165,058.06/158,709.19
  6. Step 6: Final answer
    x = 120,176.82

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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.