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Finding the Fourth Proportional to 143,383.16, 197,868.12 and 79,717.16

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Solution

The fourth proportional to 143,383.16, 197,868.12 and 79,717.16 is: 110,009.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,383.16 : 197,868.12 = 79,717.16 : x
  2. Step 2: Convert to fraction form
    143,383.16/197,868.12 = 79,717.16/x
  3. Step 3: Cross multiply
    143,383.16x = 197,868.12 × 79,717.16
  4. Step 4: Simplify right side
    143,383.16x = 15,773,484,776.67
  5. Step 5: Solve for x
    x = 15,773,484,776.67/143,383.16
  6. Step 6: Final answer
    x = 110,009.32

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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.