Home / 99,078.59-148,685.66-39,918.89

Finding the Fourth Proportional to 99,078.59, 148,685.66 and 39,918.89

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Solution

The fourth proportional to 99,078.59, 148,685.66 and 39,918.89 is: 59,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,078.59 : 148,685.66 = 39,918.89 : x
  2. Step 2: Convert to fraction form
    99,078.59/148,685.66 = 39,918.89/x
  3. Step 3: Cross multiply
    99,078.59x = 148,685.66 × 39,918.89
  4. Step 4: Simplify right side
    99,078.59x = 5,935,365,563.09
  5. Step 5: Solve for x
    x = 5,935,365,563.09/99,078.59
  6. Step 6: Final answer
    x = 59,905.64

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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.