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Finding the Fourth Proportional to 159,030.38, 219,459.08 and 87,410.39

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Solution

The fourth proportional to 159,030.38, 219,459.08 and 87,410.39 is: 120,624.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,030.38 : 219,459.08 = 87,410.39 : x
  2. Step 2: Convert to fraction form
    159,030.38/219,459.08 = 87,410.39/x
  3. Step 3: Cross multiply
    159,030.38x = 219,459.08 × 87,410.39
  4. Step 4: Simplify right side
    159,030.38x = 19,183,002,893.07
  5. Step 5: Solve for x
    x = 19,183,002,893.07/159,030.38
  6. Step 6: Final answer
    x = 120,624.77

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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.