Home / 158,998.10-219,406.77-87,376.58

Finding the Fourth Proportional to 158,998.10, 219,406.77 and 87,376.58

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Solution

The fourth proportional to 158,998.10, 219,406.77 and 87,376.58 is: 120,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,998.10 : 219,406.77 = 87,376.58 : x
  2. Step 2: Convert to fraction form
    158,998.10/219,406.77 = 87,376.58/x
  3. Step 3: Cross multiply
    158,998.10x = 219,406.77 × 87,376.58
  4. Step 4: Simplify right side
    158,998.10x = 19,171,013,191.45
  5. Step 5: Solve for x
    x = 19,171,013,191.45/158,998.10
  6. Step 6: Final answer
    x = 120,573.85

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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.