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Finding the Fourth Proportional to 143,259.41, 214,593.79 and 83,915.16

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Solution

The fourth proportional to 143,259.41, 214,593.79 and 83,915.16 is: 125,699.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,259.41 : 214,593.79 = 83,915.16 : x
  2. Step 2: Convert to fraction form
    143,259.41/214,593.79 = 83,915.16/x
  3. Step 3: Cross multiply
    143,259.41x = 214,593.79 × 83,915.16
  4. Step 4: Simplify right side
    143,259.41x = 18,007,672,222.86
  5. Step 5: Solve for x
    x = 18,007,672,222.86/143,259.41
  6. Step 6: Final answer
    x = 125,699.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.