Home / 142,302.42-196,373.97-77,768.81

Finding the Fourth Proportional to 142,302.42, 196,373.97 and 77,768.81

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Solution

The fourth proportional to 142,302.42, 196,373.97 and 77,768.81 is: 107,319.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,302.42 : 196,373.97 = 77,768.81 : x
  2. Step 2: Convert to fraction form
    142,302.42/196,373.97 = 77,768.81/x
  3. Step 3: Cross multiply
    142,302.42x = 196,373.97 × 77,768.81
  4. Step 4: Simplify right side
    142,302.42x = 15,271,769,716.41
  5. Step 5: Solve for x
    x = 15,271,769,716.41/142,302.42
  6. Step 6: Final answer
    x = 107,319.11

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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.