Home / 154,816.80-213,670.96-86,861.28

Finding the Fourth Proportional to 154,816.80, 213,670.96 and 86,861.28

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Solution

The fourth proportional to 154,816.80, 213,670.96 and 86,861.28 is: 119,881.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,816.80 : 213,670.96 = 86,861.28 : x
  2. Step 2: Convert to fraction form
    154,816.80/213,670.96 = 86,861.28/x
  3. Step 3: Cross multiply
    154,816.80x = 213,670.96 × 86,861.28
  4. Step 4: Simplify right side
    154,816.80x = 18,559,733,084.43
  5. Step 5: Solve for x
    x = 18,559,733,084.43/154,816.80
  6. Step 6: Final answer
    x = 119,881.91

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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.