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Finding the Fourth Proportional to 118,833.69, 163,987.92 and 65,117.55

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Solution

The fourth proportional to 118,833.69, 163,987.92 and 65,117.55 is: 89,860.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,833.69 : 163,987.92 = 65,117.55 : x
  2. Step 2: Convert to fraction form
    118,833.69/163,987.92 = 65,117.55/x
  3. Step 3: Cross multiply
    118,833.69x = 163,987.92 × 65,117.55
  4. Step 4: Simplify right side
    118,833.69x = 10,678,491,580.00
  5. Step 5: Solve for x
    x = 10,678,491,580.00/118,833.69
  6. Step 6: Final answer
    x = 89,860.81

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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.