Home / 142,054.80-196,039.75-77,528.18

Finding the Fourth Proportional to 142,054.80, 196,039.75 and 77,528.18

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Solution

The fourth proportional to 142,054.80, 196,039.75 and 77,528.18 is: 106,991.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,054.80 : 196,039.75 = 77,528.18 : x
  2. Step 2: Convert to fraction form
    142,054.80/196,039.75 = 77,528.18/x
  3. Step 3: Cross multiply
    142,054.80x = 196,039.75 × 77,528.18
  4. Step 4: Simplify right side
    142,054.80x = 15,198,605,389.96
  5. Step 5: Solve for x
    x = 15,198,605,389.96/142,054.80
  6. Step 6: Final answer
    x = 106,991.14

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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.