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Finding the Fourth Proportional to 159,404.76, 219,980.01 and 87,785.07

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Solution

The fourth proportional to 159,404.76, 219,980.01 and 87,785.07 is: 121,144.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,404.76 : 219,980.01 = 87,785.07 : x
  2. Step 2: Convert to fraction form
    159,404.76/219,980.01 = 87,785.07/x
  3. Step 3: Cross multiply
    159,404.76x = 219,980.01 × 87,785.07
  4. Step 4: Simplify right side
    159,404.76x = 19,310,960,576.45
  5. Step 5: Solve for x
    x = 19,310,960,576.45/159,404.76
  6. Step 6: Final answer
    x = 121,144.19

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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.