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Finding the Fourth Proportional to 157,150.86, 216,867.54 and 85,530.87

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Solution

The fourth proportional to 157,150.86, 216,867.54 and 85,530.87 is: 118,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,150.86 : 216,867.54 = 85,530.87 : x
  2. Step 2: Convert to fraction form
    157,150.86/216,867.54 = 85,530.87/x
  3. Step 3: Cross multiply
    157,150.86x = 216,867.54 × 85,530.87
  4. Step 4: Simplify right side
    157,150.86x = 18,548,869,370.96
  5. Step 5: Solve for x
    x = 18,548,869,370.96/157,150.86
  6. Step 6: Final answer
    x = 118,032.25

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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.