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Finding the Fourth Proportional to 103,549.70, 142,896.88 and 57,607.58

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Solution

The fourth proportional to 103,549.70, 142,896.88 and 57,607.58 is: 79,497.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,549.70 : 142,896.88 = 57,607.58 : x
  2. Step 2: Convert to fraction form
    103,549.70/142,896.88 = 57,607.58/x
  3. Step 3: Cross multiply
    103,549.70x = 142,896.88 × 57,607.58
  4. Step 4: Simplify right side
    103,549.70x = 8,231,943,446.35
  5. Step 5: Solve for x
    x = 8,231,943,446.35/103,549.70
  6. Step 6: Final answer
    x = 79,497.51

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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.