Home / 143,117.16-197,502.12-79,455.12

Finding the Fourth Proportional to 143,117.16, 197,502.12 and 79,455.12

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Solution

The fourth proportional to 143,117.16, 197,502.12 and 79,455.12 is: 109,648.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,117.16 : 197,502.12 = 79,455.12 : x
  2. Step 2: Convert to fraction form
    143,117.16/197,502.12 = 79,455.12/x
  3. Step 3: Cross multiply
    143,117.16x = 197,502.12 × 79,455.12
  4. Step 4: Simplify right side
    143,117.16x = 15,692,554,644.85
  5. Step 5: Solve for x
    x = 15,692,554,644.85/143,117.16
  6. Step 6: Final answer
    x = 109,648.31

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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.