Home / 143,146.72-197,548.50-79,490.44

Finding the Fourth Proportional to 143,146.72, 197,548.50 and 79,490.44

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Solution

The fourth proportional to 143,146.72, 197,548.50 and 79,490.44 is: 109,700.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,146.72 : 197,548.50 = 79,490.44 : x
  2. Step 2: Convert to fraction form
    143,146.72/197,548.50 = 79,490.44/x
  3. Step 3: Cross multiply
    143,146.72x = 197,548.50 × 79,490.44
  4. Step 4: Simplify right side
    143,146.72x = 15,703,217,186.34
  5. Step 5: Solve for x
    x = 15,703,217,186.34/143,146.72
  6. Step 6: Final answer
    x = 109,700.15

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1.5x scale

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.