Home / 157,438.08-217,260.23-85,819.50

Finding the Fourth Proportional to 157,438.08, 217,260.23 and 85,819.50

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Solution

The fourth proportional to 157,438.08, 217,260.23 and 85,819.50 is: 118,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,438.08 : 217,260.23 = 85,819.50 : x
  2. Step 2: Convert to fraction form
    157,438.08/217,260.23 = 85,819.50/x
  3. Step 3: Cross multiply
    157,438.08x = 217,260.23 × 85,819.50
  4. Step 4: Simplify right side
    157,438.08x = 18,645,163,879.39
  5. Step 5: Solve for x
    x = 18,645,163,879.39/157,438.08
  6. Step 6: Final answer
    x = 118,428.55

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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.