Home / 159,155.96-219,628.40-87,531.35

Finding the Fourth Proportional to 159,155.96, 219,628.40 and 87,531.35

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Solution

The fourth proportional to 159,155.96, 219,628.40 and 87,531.35 is: 120,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,155.96 : 219,628.40 = 87,531.35 : x
  2. Step 2: Convert to fraction form
    159,155.96/219,628.40 = 87,531.35/x
  3. Step 3: Cross multiply
    159,155.96x = 219,628.40 × 87,531.35
  4. Step 4: Simplify right side
    159,155.96x = 19,224,368,814.54
  5. Step 5: Solve for x
    x = 19,224,368,814.54/159,155.96
  6. Step 6: Final answer
    x = 120,789.50

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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.