Home / 107,934.70-161,902.05-85,384.30

Finding the Fourth Proportional to 107,934.70, 161,902.05 and 85,384.30

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Solution

The fourth proportional to 107,934.70, 161,902.05 and 85,384.30 is: 128,076.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,934.70 : 161,902.05 = 85,384.30 : x
  2. Step 2: Convert to fraction form
    107,934.70/161,902.05 = 85,384.30/x
  3. Step 3: Cross multiply
    107,934.70x = 161,902.05 × 85,384.30
  4. Step 4: Simplify right side
    107,934.70x = 13,823,893,207.82
  5. Step 5: Solve for x
    x = 13,823,893,207.82/107,934.70
  6. Step 6: Final answer
    x = 128,076.45

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1.5x scale

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.