Home / 89,929.11-134,663.61-87,268.47

Finding the Fourth Proportional to 89,929.11, 134,663.61 and 87,268.47

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Solution

The fourth proportional to 89,929.11, 134,663.61 and 87,268.47 is: 130,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,929.11 : 134,663.61 = 87,268.47 : x
  2. Step 2: Convert to fraction form
    89,929.11/134,663.61 = 87,268.47/x
  3. Step 3: Cross multiply
    89,929.11x = 134,663.61 × 87,268.47
  4. Step 4: Simplify right side
    89,929.11x = 11,751,887,209.38
  5. Step 5: Solve for x
    x = 11,751,887,209.38/89,929.11
  6. Step 6: Final answer
    x = 130,679.46

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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.