Home / 142,185.13-196,216.43-77,652.70

Finding the Fourth Proportional to 142,185.13, 196,216.43 and 77,652.70

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Solution

The fourth proportional to 142,185.13, 196,216.43 and 77,652.70 is: 107,161.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,185.13 : 196,216.43 = 77,652.70 : x
  2. Step 2: Convert to fraction form
    142,185.13/196,216.43 = 77,652.70/x
  3. Step 3: Cross multiply
    142,185.13x = 196,216.43 × 77,652.70
  4. Step 4: Simplify right side
    142,185.13x = 15,236,734,695.06
  5. Step 5: Solve for x
    x = 15,236,734,695.06/142,185.13
  6. Step 6: Final answer
    x = 107,161.24

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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.