Home / 143,066.16-197,431.29-79,403.94

Finding the Fourth Proportional to 143,066.16, 197,431.29 and 79,403.94

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Solution

The fourth proportional to 143,066.16, 197,431.29 and 79,403.94 is: 109,577.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,066.16 : 197,431.29 = 79,403.94 : x
  2. Step 2: Convert to fraction form
    143,066.16/197,431.29 = 79,403.94/x
  3. Step 3: Cross multiply
    143,066.16x = 197,431.29 × 79,403.94
  4. Step 4: Simplify right side
    143,066.16x = 15,676,822,305.28
  5. Step 5: Solve for x
    x = 15,676,822,305.28/143,066.16
  6. Step 6: Final answer
    x = 109,577.43

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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.