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Finding the Fourth Proportional to 104,143.53, 143,718.21 and 56,396.97

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Solution

The fourth proportional to 104,143.53, 143,718.21 and 56,396.97 is: 77,827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,143.53 : 143,718.21 = 56,396.97 : x
  2. Step 2: Convert to fraction form
    104,143.53/143,718.21 = 56,396.97/x
  3. Step 3: Cross multiply
    104,143.53x = 143,718.21 × 56,396.97
  4. Step 4: Simplify right side
    104,143.53x = 8,105,271,577.82
  5. Step 5: Solve for x
    x = 8,105,271,577.82/104,143.53
  6. Step 6: Final answer
    x = 77,827.89

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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.