Home / 139,898.16-193,057-76,236.40

Finding the Fourth Proportional to 139,898.16, 193,057 and 76,236.40

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Solution

The fourth proportional to 139,898.16, 193,057 and 76,236.40 is: 105,204.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,898.16 : 193,057 = 76,236.40 : x
  2. Step 2: Convert to fraction form
    139,898.16/193,057 = 76,236.40/x
  3. Step 3: Cross multiply
    139,898.16x = 193,057 × 76,236.40
  4. Step 4: Simplify right side
    139,898.16x = 14,717,970,674.80
  5. Step 5: Solve for x
    x = 14,717,970,674.80/139,898.16
  6. Step 6: Final answer
    x = 105,204.89

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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.