Home / 118,739.75-163,858.87-64,291.45

Finding the Fourth Proportional to 118,739.75, 163,858.87 and 64,291.45

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Solution

The fourth proportional to 118,739.75, 163,858.87 and 64,291.45 is: 88,721.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,739.75 : 163,858.87 = 64,291.45 : x
  2. Step 2: Convert to fraction form
    118,739.75/163,858.87 = 64,291.45/x
  3. Step 3: Cross multiply
    118,739.75x = 163,858.87 × 64,291.45
  4. Step 4: Simplify right side
    118,739.75x = 10,534,724,026.20
  5. Step 5: Solve for x
    x = 10,534,724,026.20/118,739.75
  6. Step 6: Final answer
    x = 88,721.12

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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.