Home / 143,146.79-197,551.47-79,485.04

Finding the Fourth Proportional to 143,146.79, 197,551.47 and 79,485.04

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Solution

The fourth proportional to 143,146.79, 197,551.47 and 79,485.04 is: 109,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,146.79 : 197,551.47 = 79,485.04 : x
  2. Step 2: Convert to fraction form
    143,146.79/197,551.47 = 79,485.04/x
  3. Step 3: Cross multiply
    143,146.79x = 197,551.47 × 79,485.04
  4. Step 4: Simplify right side
    143,146.79x = 15,702,386,741.95
  5. Step 5: Solve for x
    x = 15,702,386,741.95/143,146.79
  6. Step 6: Final answer
    x = 109,694.30

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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.