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Finding the Fourth Proportional to 99,606.60, 137,455.65 and 54,285.60

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Solution

The fourth proportional to 99,606.60, 137,455.65 and 54,285.60 is: 74,913.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,606.60 : 137,455.65 = 54,285.60 : x
  2. Step 2: Convert to fraction form
    99,606.60/137,455.65 = 54,285.60/x
  3. Step 3: Cross multiply
    99,606.60x = 137,455.65 × 54,285.60
  4. Step 4: Simplify right side
    99,606.60x = 7,461,862,433.64
  5. Step 5: Solve for x
    x = 7,461,862,433.64/99,606.60
  6. Step 6: Final answer
    x = 74,913.33

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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.