Home / 118,830.48-163,985.52-65,115.36

Finding the Fourth Proportional to 118,830.48, 163,985.52 and 65,115.36

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Solution

The fourth proportional to 118,830.48, 163,985.52 and 65,115.36 is: 89,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,830.48 : 163,985.52 = 65,115.36 : x
  2. Step 2: Convert to fraction form
    118,830.48/163,985.52 = 65,115.36/x
  3. Step 3: Cross multiply
    118,830.48x = 163,985.52 × 65,115.36
  4. Step 4: Simplify right side
    118,830.48x = 10,677,976,169.59
  5. Step 5: Solve for x
    x = 10,677,976,169.59/118,830.48
  6. Step 6: Final answer
    x = 89,858.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.