Home / 103,187.92-142,339-64,886.86

Finding the Fourth Proportional to 103,187.92, 142,339 and 64,886.86

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Solution

The fourth proportional to 103,187.92, 142,339 and 64,886.86 is: 89,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,187.92 : 142,339 = 64,886.86 : x
  2. Step 2: Convert to fraction form
    103,187.92/142,339 = 64,886.86/x
  3. Step 3: Cross multiply
    103,187.92x = 142,339 × 64,886.86
  4. Step 4: Simplify right side
    103,187.92x = 9,235,930,765.54
  5. Step 5: Solve for x
    x = 9,235,930,765.54/103,187.92
  6. Step 6: Final answer
    x = 89,505.93

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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.