Home / 105,789.47-145,991.84-58,042.67

Finding the Fourth Proportional to 105,789.47, 145,991.84 and 58,042.67

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Solution

The fourth proportional to 105,789.47, 145,991.84 and 58,042.67 is: 80,100.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,789.47 : 145,991.84 = 58,042.67 : x
  2. Step 2: Convert to fraction form
    105,789.47/145,991.84 = 58,042.67/x
  3. Step 3: Cross multiply
    105,789.47x = 145,991.84 × 58,042.67
  4. Step 4: Simplify right side
    105,789.47x = 8,473,755,171.64
  5. Step 5: Solve for x
    x = 8,473,755,171.64/105,789.47
  6. Step 6: Final answer
    x = 80,100.18

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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.