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Finding the Fourth Proportional to 157,179.78, 216,903.94 and 85,558.26

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Solution

The fourth proportional to 157,179.78, 216,903.94 and 85,558.26 is: 118,068.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,179.78 : 216,903.94 = 85,558.26 : x
  2. Step 2: Convert to fraction form
    157,179.78/216,903.94 = 85,558.26/x
  3. Step 3: Cross multiply
    157,179.78x = 216,903.94 × 85,558.26
  4. Step 4: Simplify right side
    157,179.78x = 18,557,923,693.54
  5. Step 5: Solve for x
    x = 18,557,923,693.54/157,179.78
  6. Step 6: Final answer
    x = 118,068.14

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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.