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Finding the Fourth Proportional to 143,634.51, 215,482.64 and 71,626.66

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Solution

The fourth proportional to 143,634.51, 215,482.64 and 71,626.66 is: 107,455.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,634.51 : 215,482.64 = 71,626.66 : x
  2. Step 2: Convert to fraction form
    143,634.51/215,482.64 = 71,626.66/x
  3. Step 3: Cross multiply
    143,634.51x = 215,482.64 × 71,626.66
  4. Step 4: Simplify right side
    143,634.51x = 15,434,301,791.18
  5. Step 5: Solve for x
    x = 15,434,301,791.18/143,634.51
  6. Step 6: Final answer
    x = 107,455.39

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1.5x scale

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.