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Finding the Fourth Proportional to 157,289.58, 217,059.95 and 85,669.38

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Solution

The fourth proportional to 157,289.58, 217,059.95 and 85,669.38 is: 118,223.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,289.58 : 217,059.95 = 85,669.38 : x
  2. Step 2: Convert to fraction form
    157,289.58/217,059.95 = 85,669.38/x
  3. Step 3: Cross multiply
    157,289.58x = 217,059.95 × 85,669.38
  4. Step 4: Simplify right side
    157,289.58x = 18,595,391,553.50
  5. Step 5: Solve for x
    x = 18,595,391,553.50/157,289.58
  6. Step 6: Final answer
    x = 118,223.93

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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.