Home / 111,341.40-166,623.30-77,904.60

Finding the Fourth Proportional to 111,341.40, 166,623.30 and 77,904.60

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Solution

The fourth proportional to 111,341.40, 166,623.30 and 77,904.60 is: 116,584.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,341.40 : 166,623.30 = 77,904.60 : x
  2. Step 2: Convert to fraction form
    111,341.40/166,623.30 = 77,904.60/x
  3. Step 3: Cross multiply
    111,341.40x = 166,623.30 × 77,904.60
  4. Step 4: Simplify right side
    111,341.40x = 12,980,721,537.18
  5. Step 5: Solve for x
    x = 12,980,721,537.18/111,341.40
  6. Step 6: Final answer
    x = 116,584.86

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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.