Home / 120,601.15-166,276.63-86,186.98

Finding the Fourth Proportional to 120,601.15, 166,276.63 and 86,186.98

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Solution

The fourth proportional to 120,601.15, 166,276.63 and 86,186.98 is: 118,828.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,601.15 : 166,276.63 = 86,186.98 : x
  2. Step 2: Convert to fraction form
    120,601.15/166,276.63 = 86,186.98/x
  3. Step 3: Cross multiply
    120,601.15x = 166,276.63 × 86,186.98
  4. Step 4: Simplify right side
    120,601.15x = 14,330,880,899.86
  5. Step 5: Solve for x
    x = 14,330,880,899.86/120,601.15
  6. Step 6: Final answer
    x = 118,828.73

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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.