Home / 131,389.29-181,318.50-74,804.31

Finding the Fourth Proportional to 131,389.29, 181,318.50 and 74,804.31

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Solution

The fourth proportional to 131,389.29, 181,318.50 and 74,804.31 is: 103,230.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,389.29 : 181,318.50 = 74,804.31 : x
  2. Step 2: Convert to fraction form
    131,389.29/181,318.50 = 74,804.31/x
  3. Step 3: Cross multiply
    131,389.29x = 181,318.50 × 74,804.31
  4. Step 4: Simplify right side
    131,389.29x = 13,563,405,282.74
  5. Step 5: Solve for x
    x = 13,563,405,282.74/131,389.29
  6. Step 6: Final answer
    x = 103,230.68

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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.