Home / 102,365.12-141,261.56-57,042.88

Finding the Fourth Proportional to 102,365.12, 141,261.56 and 57,042.88

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Solution

The fourth proportional to 102,365.12, 141,261.56 and 57,042.88 is: 78,717.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,365.12 : 141,261.56 = 57,042.88 : x
  2. Step 2: Convert to fraction form
    102,365.12/141,261.56 = 57,042.88/x
  3. Step 3: Cross multiply
    102,365.12x = 141,261.56 × 57,042.88
  4. Step 4: Simplify right side
    102,365.12x = 8,057,966,215.69
  5. Step 5: Solve for x
    x = 8,057,966,215.69/102,365.12
  6. Step 6: Final answer
    x = 78,717.89

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1.5x scale

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.