Home / 107,654.49-148,589.57-83,407.50

Finding the Fourth Proportional to 107,654.49, 148,589.57 and 83,407.50

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Solution

The fourth proportional to 107,654.49, 148,589.57 and 83,407.50 is: 115,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,654.49 : 148,589.57 = 83,407.50 : x
  2. Step 2: Convert to fraction form
    107,654.49/148,589.57 = 83,407.50/x
  3. Step 3: Cross multiply
    107,654.49x = 148,589.57 × 83,407.50
  4. Step 4: Simplify right side
    107,654.49x = 12,393,484,768.29
  5. Step 5: Solve for x
    x = 12,393,484,768.29/107,654.49
  6. Step 6: Final answer
    x = 115,122.79

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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.