Home / 89,219.80-132,810.35-87,890.68

Finding the Fourth Proportional to 89,219.80, 132,810.35 and 87,890.68

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Solution

The fourth proportional to 89,219.80, 132,810.35 and 87,890.68 is: 130,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,219.80 : 132,810.35 = 87,890.68 : x
  2. Step 2: Convert to fraction form
    89,219.80/132,810.35 = 87,890.68/x
  3. Step 3: Cross multiply
    89,219.80x = 132,810.35 × 87,890.68
  4. Step 4: Simplify right side
    89,219.80x = 11,672,791,972.54
  5. Step 5: Solve for x
    x = 11,672,791,972.54/89,219.80
  6. Step 6: Final answer
    x = 130,831.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.