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Finding the Fourth Proportional to 118,412.88, 163,542.20 and 91,877.28

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Solution

The fourth proportional to 118,412.88, 163,542.20 and 91,877.28 is: 126,893.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,412.88 : 163,542.20 = 91,877.28 : x
  2. Step 2: Convert to fraction form
    118,412.88/163,542.20 = 91,877.28/x
  3. Step 3: Cross multiply
    118,412.88x = 163,542.20 × 91,877.28
  4. Step 4: Simplify right side
    118,412.88x = 15,025,812,501.22
  5. Step 5: Solve for x
    x = 15,025,812,501.22/118,412.88
  6. Step 6: Final answer
    x = 126,893.40

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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.