Home / 142,808.84-197,074.97-78,281.66

Finding the Fourth Proportional to 142,808.84, 197,074.97 and 78,281.66

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Solution

The fourth proportional to 142,808.84, 197,074.97 and 78,281.66 is: 108,028.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,808.84 : 197,074.97 = 78,281.66 : x
  2. Step 2: Convert to fraction form
    142,808.84/197,074.97 = 78,281.66/x
  3. Step 3: Cross multiply
    142,808.84x = 197,074.97 × 78,281.66
  4. Step 4: Simplify right side
    142,808.84x = 15,427,356,190.89
  5. Step 5: Solve for x
    x = 15,427,356,190.89/142,808.84
  6. Step 6: Final answer
    x = 108,028.02

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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.