Home / 115,733.52-173,421.64-78,146.28

Finding the Fourth Proportional to 115,733.52, 173,421.64 and 78,146.28

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Solution

The fourth proportional to 115,733.52, 173,421.64 and 78,146.28 is: 117,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,733.52 : 173,421.64 = 78,146.28 : x
  2. Step 2: Convert to fraction form
    115,733.52/173,421.64 = 78,146.28/x
  3. Step 3: Cross multiply
    115,733.52x = 173,421.64 × 78,146.28
  4. Step 4: Simplify right side
    115,733.52x = 13,552,256,037.50
  5. Step 5: Solve for x
    x = 13,552,256,037.50/115,733.52
  6. Step 6: Final answer
    x = 117,098.80

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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.