Home / 118,699.12-163,804.82-64,987.55

Finding the Fourth Proportional to 118,699.12, 163,804.82 and 64,987.55

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Solution

The fourth proportional to 118,699.12, 163,804.82 and 64,987.55 is: 89,682.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,699.12 : 163,804.82 = 64,987.55 : x
  2. Step 2: Convert to fraction form
    118,699.12/163,804.82 = 64,987.55/x
  3. Step 3: Cross multiply
    118,699.12x = 163,804.82 × 64,987.55
  4. Step 4: Simplify right side
    118,699.12x = 10,645,273,682.95
  5. Step 5: Solve for x
    x = 10,645,273,682.95/118,699.12
  6. Step 6: Final answer
    x = 89,682.84

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1.5x scale

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.