Home / 81,386.04-122,089.98-76,465.26

Finding the Fourth Proportional to 81,386.04, 122,089.98 and 76,465.26

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Solution

The fourth proportional to 81,386.04, 122,089.98 and 76,465.26 is: 114,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,386.04 : 122,089.98 = 76,465.26 : x
  2. Step 2: Convert to fraction form
    81,386.04/122,089.98 = 76,465.26/x
  3. Step 3: Cross multiply
    81,386.04x = 122,089.98 × 76,465.26
  4. Step 4: Simplify right side
    81,386.04x = 9,335,642,064.09
  5. Step 5: Solve for x
    x = 9,335,642,064.09/81,386.04
  6. Step 6: Final answer
    x = 114,708.15

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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.