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Finding the Fourth Proportional to 133,386.60, 199,593.90 and 83,490.60

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Solution

The fourth proportional to 133,386.60, 199,593.90 and 83,490.60 is: 124,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,386.60 : 199,593.90 = 83,490.60 : x
  2. Step 2: Convert to fraction form
    133,386.60/199,593.90 = 83,490.60/x
  3. Step 3: Cross multiply
    133,386.60x = 199,593.90 × 83,490.60
  4. Step 4: Simplify right side
    133,386.60x = 16,664,214,467.34
  5. Step 5: Solve for x
    x = 16,664,214,467.34/133,386.60
  6. Step 6: Final answer
    x = 124,931.70

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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.