Home / 86,825.12-119,359.17-74,681.19

Finding the Fourth Proportional to 86,825.12, 119,359.17 and 74,681.19

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Solution

The fourth proportional to 86,825.12, 119,359.17 and 74,681.19 is: 102,664.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,825.12 : 119,359.17 = 74,681.19 : x
  2. Step 2: Convert to fraction form
    86,825.12/119,359.17 = 74,681.19/x
  3. Step 3: Cross multiply
    86,825.12x = 119,359.17 × 74,681.19
  4. Step 4: Simplify right side
    86,825.12x = 8,913,884,853.01
  5. Step 5: Solve for x
    x = 8,913,884,853.01/86,825.12
  6. Step 6: Final answer
    x = 102,664.82

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.