Home / 158,692.28-218,958-143,989.16

Finding the Fourth Proportional to 158,692.28, 218,958 and 143,989.16

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Solution

The fourth proportional to 158,692.28, 218,958 and 143,989.16 is: 198,671.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,692.28 : 218,958 = 143,989.16 : x
  2. Step 2: Convert to fraction form
    158,692.28/218,958 = 143,989.16/x
  3. Step 3: Cross multiply
    158,692.28x = 218,958 × 143,989.16
  4. Step 4: Simplify right side
    158,692.28x = 31,527,578,495.28
  5. Step 5: Solve for x
    x = 31,527,578,495.28/158,692.28
  6. Step 6: Final answer
    x = 198,671.15

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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.