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Finding the Fourth Proportional to 107,530, 148,391.40 and 60,426

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Solution

The fourth proportional to 107,530, 148,391.40 and 60,426 is: 83,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,530 : 148,391.40 = 60,426 : x
  2. Step 2: Convert to fraction form
    107,530/148,391.40 = 60,426/x
  3. Step 3: Cross multiply
    107,530x = 148,391.40 × 60,426
  4. Step 4: Simplify right side
    107,530x = 8,966,698,736.40
  5. Step 5: Solve for x
    x = 8,966,698,736.40/107,530
  6. Step 6: Final answer
    x = 83,387.88

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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.