Home / 101,938.20-140,670.03-56,619.06

Finding the Fourth Proportional to 101,938.20, 140,670.03 and 56,619.06

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Solution

The fourth proportional to 101,938.20, 140,670.03 and 56,619.06 is: 78,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,938.20 : 140,670.03 = 56,619.06 : x
  2. Step 2: Convert to fraction form
    101,938.20/140,670.03 = 56,619.06/x
  3. Step 3: Cross multiply
    101,938.20x = 140,670.03 × 56,619.06
  4. Step 4: Simplify right side
    101,938.20x = 7,964,604,868.77
  5. Step 5: Solve for x
    x = 7,964,604,868.77/101,938.20
  6. Step 6: Final answer
    x = 78,131.70

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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.