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Finding the Fourth Proportional to 104,248.84, 143,859.86 and 61,782.20

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Solution

The fourth proportional to 104,248.84, 143,859.86 and 61,782.20 is: 85,257.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,248.84 : 143,859.86 = 61,782.20 : x
  2. Step 2: Convert to fraction form
    104,248.84/143,859.86 = 61,782.20/x
  3. Step 3: Cross multiply
    104,248.84x = 143,859.86 × 61,782.20
  4. Step 4: Simplify right side
    104,248.84x = 8,887,978,642.49
  5. Step 5: Solve for x
    x = 8,887,978,642.49/104,248.84
  6. Step 6: Final answer
    x = 85,257.34

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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.