Home / 139,810.46-192,938.73-76,148.06

Finding the Fourth Proportional to 139,810.46, 192,938.73 and 76,148.06

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Solution

The fourth proportional to 139,810.46, 192,938.73 and 76,148.06 is: 105,084.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,810.46 : 192,938.73 = 76,148.06 : x
  2. Step 2: Convert to fraction form
    139,810.46/192,938.73 = 76,148.06/x
  3. Step 3: Cross multiply
    139,810.46x = 192,938.73 × 76,148.06
  4. Step 4: Simplify right side
    139,810.46x = 14,691,909,988.36
  5. Step 5: Solve for x
    x = 14,691,909,988.36/139,810.46
  6. Step 6: Final answer
    x = 105,084.48

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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.