Home / 142,334.25-196,421.28-77,803.75

Finding the Fourth Proportional to 142,334.25, 196,421.28 and 77,803.75

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Solution

The fourth proportional to 142,334.25, 196,421.28 and 77,803.75 is: 107,369.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,334.25 : 196,421.28 = 77,803.75 : x
  2. Step 2: Convert to fraction form
    142,334.25/196,421.28 = 77,803.75/x
  3. Step 3: Cross multiply
    142,334.25x = 196,421.28 × 77,803.75
  4. Step 4: Simplify right side
    142,334.25x = 15,282,311,672.75
  5. Step 5: Solve for x
    x = 15,282,311,672.75/142,334.25
  6. Step 6: Final answer
    x = 107,369.18

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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.