Home / 158,761.60-219,093.28-87,140.32

Finding the Fourth Proportional to 158,761.60, 219,093.28 and 87,140.32

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Solution

The fourth proportional to 158,761.60, 219,093.28 and 87,140.32 is: 120,254.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,761.60 : 219,093.28 = 87,140.32 : x
  2. Step 2: Convert to fraction form
    158,761.60/219,093.28 = 87,140.32/x
  3. Step 3: Cross multiply
    158,761.60x = 219,093.28 × 87,140.32
  4. Step 4: Simplify right side
    158,761.60x = 19,091,858,529.05
  5. Step 5: Solve for x
    x = 19,091,858,529.05/158,761.60
  6. Step 6: Final answer
    x = 120,254.89

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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.