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Finding the Fourth Proportional to 139.98, 210.06 and 58.86

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Solution

The fourth proportional to 139.98, 210.06 and 58.86 is: 88.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.98 : 210.06 = 58.86 : x
  2. Step 2: Convert to fraction form
    139.98/210.06 = 58.86/x
  3. Step 3: Cross multiply
    139.98x = 210.06 × 58.86
  4. Step 4: Simplify right side
    139.98x = 12,364.13
  5. Step 5: Solve for x
    x = 12,364.13/139.98
  6. Step 6: Final answer
    x = 88.33

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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.