Home / 101,971.89-140,717.12-56,652.66

Finding the Fourth Proportional to 101,971.89, 140,717.12 and 56,652.66

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Solution

The fourth proportional to 101,971.89, 140,717.12 and 56,652.66 is: 78,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,971.89 : 140,717.12 = 56,652.66 : x
  2. Step 2: Convert to fraction form
    101,971.89/140,717.12 = 56,652.66/x
  3. Step 3: Cross multiply
    101,971.89x = 140,717.12 × 56,652.66
  4. Step 4: Simplify right side
    101,971.89x = 7,971,998,872.28
  5. Step 5: Solve for x
    x = 7,971,998,872.28/101,971.89
  6. Step 6: Final answer
    x = 78,178.40

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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.