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Finding the Fourth Proportional to 103,980.62, 143,494.64 and 58,658.46

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Solution

The fourth proportional to 103,980.62, 143,494.64 and 58,658.46 is: 80,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,980.62 : 143,494.64 = 58,658.46 : x
  2. Step 2: Convert to fraction form
    103,980.62/143,494.64 = 58,658.46/x
  3. Step 3: Cross multiply
    103,980.62x = 143,494.64 × 58,658.46
  4. Step 4: Simplify right side
    103,980.62x = 8,417,174,591.49
  5. Step 5: Solve for x
    x = 8,417,174,591.49/103,980.62
  6. Step 6: Final answer
    x = 80,949.46

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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.