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Finding the Fourth Proportional to 163,539.60, 225,681.96 and 90,939.60

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Solution

The fourth proportional to 163,539.60, 225,681.96 and 90,939.60 is: 125,495.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,539.60 : 225,681.96 = 90,939.60 : x
  2. Step 2: Convert to fraction form
    163,539.60/225,681.96 = 90,939.60/x
  3. Step 3: Cross multiply
    163,539.60x = 225,681.96 × 90,939.60
  4. Step 4: Simplify right side
    163,539.60x = 20,523,427,169.62
  5. Step 5: Solve for x
    x = 20,523,427,169.62/163,539.60
  6. Step 6: Final answer
    x = 125,495.15

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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.