Home / 89,339.04-134,543.64-81,367.36

Finding the Fourth Proportional to 89,339.04, 134,543.64 and 81,367.36

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Solution

The fourth proportional to 89,339.04, 134,543.64 and 81,367.36 is: 122,538.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,339.04 : 134,543.64 = 81,367.36 : x
  2. Step 2: Convert to fraction form
    89,339.04/134,543.64 = 81,367.36/x
  3. Step 3: Cross multiply
    89,339.04x = 134,543.64 × 81,367.36
  4. Step 4: Simplify right side
    89,339.04x = 10,947,460,791.59
  5. Step 5: Solve for x
    x = 10,947,460,791.59/89,339.04
  6. Step 6: Final answer
    x = 122,538.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.