Home / 143,613.10-215,451.63-43,781.06

Finding the Fourth Proportional to 143,613.10, 215,451.63 and 43,781.06

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Solution

The fourth proportional to 143,613.10, 215,451.63 and 43,781.06 is: 65,681.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,613.10 : 215,451.63 = 43,781.06 : x
  2. Step 2: Convert to fraction form
    143,613.10/215,451.63 = 43,781.06/x
  3. Step 3: Cross multiply
    143,613.10x = 215,451.63 × 43,781.06
  4. Step 4: Simplify right side
    143,613.10x = 9,432,700,066.84
  5. Step 5: Solve for x
    x = 9,432,700,066.84/143,613.10
  6. Step 6: Final answer
    x = 65,681.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.