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Finding the Fourth Proportional to 118,681.44, 163,779.44 and 64,965.36

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Solution

The fourth proportional to 118,681.44, 163,779.44 and 64,965.36 is: 89,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,681.44 : 163,779.44 = 64,965.36 : x
  2. Step 2: Convert to fraction form
    118,681.44/163,779.44 = 64,965.36/x
  3. Step 3: Cross multiply
    118,681.44x = 163,779.44 × 64,965.36
  4. Step 4: Simplify right side
    118,681.44x = 10,639,990,280.20
  5. Step 5: Solve for x
    x = 10,639,990,280.20/118,681.44
  6. Step 6: Final answer
    x = 89,651.68

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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.